Does your IQ depend on the size of your brain? A group of female college students took a test that measured their verbal IQs and also underwent an MRI scan to measure the size of their brains (in 1000s of pixels). The scatter plot and regression analysis are shown, and the assumptions for inference were satisfied.
Dependent variable is: IQ_Verbal
R-squared = 6.5% s = 21.5291 df = 18
Variable   Coefficient  SE(Coeff)
Intercept  24.1835 76.38
Size   0.098842  0.0884
a) Test an appropriate hypothesis about the association between brain size and IQ.
b) State your conclusion about the strength of this association.

Answers

Answer 1

Regression analysis is a statistical method used to examine the relationship between a dependent variable (also known as the outcome variable or response variable) and one or more independent variables (also known as predictors or explanatory variables).

What is regression analysis?

The process of regression analysis involves estimating the values of the coefficients (i.e. the slope and y-intercept) that minimize the difference between the predicted values (from the model) and the actual values (from the data). This difference is typically measured by the sum of the squared errors (SSE). The resulting line or hyperplane is called the regression line or regression model.

Once the model is built, it can be used to make predictions about the dependent variable based on new values of the independent variables. Additionally, regression analysis can also be used to test hypotheses about the relationship between the variables, and to assess the strength and direction of the relationship.

a) An appropriate hypothesis to test the association between brain size and IQ would be:

H0: There is no association between brain size and IQ (coefficient of brain size = 0)

Ha: There is an association between brain size and IQ (coefficient of brain size ≠ 0)

b) Based on the R-squared value of 6.5% and the coefficient of brain size being 0.098842, it can be concluded that there is a weak association between brain size and IQ. The coefficient suggests that for every 1000 pixels increase in brain size, there is a 0.098842 increase in IQ, which is not a large effect. Additionally, the R-squared value indicates that only 6.5% of the variation in IQ can be explained by brain size.

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Related Questions

Solomon Ski Company manufactures snow skis. During the most recent accounting period, the company’s finishing department transferred 4,150 sets of skis to finished goods. At the end of the accounting period, 480 sets of skis were estimated to be 50 percent complete. Total product costs for the finishing department amounted to $285,350.

Required

Determine the cost per equivalent.

Determine the cost of the goods transferred out of the finishing department.

Determine the cost of the finishing department’s ending work in process inventory.

Answers

The various costs for Solomon Ski Company during the recent accounting period are determined as follows:

1. Cost per equivalent unit is $65.

2. Cost of finished goods transferred out from the finishing department is $269,750.

3. Cost of the ending WIP inventory is $15,600.

What is the cost per equivalent unit?

The cost per equivalent unit refers to the average cost per unit based on the total production costs divided by the total equivalent units of production.

The equivalent units of production depend on the degree or percentage of completion for the various cost classes.

Data and Calculations:

Transfer to finished goods = 4,150

Ending inventory = 480

Degree of completion of the ending inventory = 50%

Total equivalent units = 4,390 (4,150 + 480 x 50%)

Total production costs = $285,350

Cost per equivalent unit = $65 ($285,350/4,390)

Cost of finished goods = $269,750 ($65 x 4,150)

Cost of the ending WIP = $15,600 ($65 x 240)

Thus, equivalent units refer to the degree of work completed per unit.

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Discuss the importance of customer service

Answers

Customer service is mostly present in malls, airports, buildings etc. Customer service is to help the customer for their needs.

What is principle of management?

Answers

Answer:

principal of management is Techniques are procedures or methods, which involve a series of steps to be taken to accomplish the desired goals. Principles of management are broad and general guidelines for decision-making behaviour.

ENG-114-02E-2022SP-Prof Research & Reporting

Answers

ENG-114-02E-2022SP-Prof Research & Reporting involves teaching professional communication skills.

What is Communication?

This is the act of exchanging information through different types of medium such as writing etc.

The course above is taught with the use of articles reviewed by peers for as better understanding of how to communicate better in this type of scholarly environment.

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calculate the break even sales dollars if the fixed expenses are $7000 and the contribution ratio is 40%?

Answers

Explanation:

break even points is the situation where thier is no profit or loss

the formula for break even point is fixed cost divided by contribution

break even = fixed cost

_________

contribution

fixed cost = $7000

contribution = 40%

= 7000/40

= 175

Break even points is the situation where their is no profit or loss. The break-even sales in dollars is $17500.

Determine the volume of output or a specified ideal sales mix by performing a break-even analysis. As the meter and computations are not used by other parties like investors, regulators, or financial institutions, the study is exclusively for a company's management to use.

The formula for break even point is fixed cost divided by contribution.

Given,

Fixed cost = $7000

Contribution = 40%

Break-even sales = $7000/40%

                             = $17,500

Therefore, $17500 is the break even sales dollars.

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All else held constant, which of the following will decrease the allocation to the risky asset?
An increase in the expected return of the risky asset
An increase in risk aversion
An decrease in the volatility of the risky asset
A decrease in the risk-free rate

Same question but for increase the allocation of the risky asset

Answers

Answer:

an increase in risk aversion

Explanation:

This would cause a decrease in allocation to “risky” investments… at least that’s what we learned in MGT1104, for #2, not sure, would either be decrease in volatility or increase in exp. Return

Part 1: Describe the following in 175 words: • 2 of the main risks of entrepreneurship and small business ownership ​

Answers

1.Bankruptcy

It is a process a business goes through in federal court. It is designed to help your business eliminate or repay its debt under the guidance and protection of the bankruptcy court.

2. Financial risk

it is the possibility of losing money on an investment or business venture. Some more common and distinct financial risks include credit risk, liquidity risk, and operational risk. Financial risk is a type of danger that can result in the loss of capital to interested parties.

3. Founder risk

it considers who the founders of the company are, if they get along, and how they will work for the company.

4.Product risk

it takes into account the engineers creating new product for the business and how they will recruit other product engineers.

while you were assessing shift lead touch points you noticed that the. temperature on the cold line ingredients temperature is 41°f . what should you do ​

Answers

Answer: lower temp

Explanation:

In a situation where an assessment shift lead touchpoints have been noticed to have a temperature on the cold line ingredients' temperature is 41 degree Fahrenheit, it is advisable for the tester to lower the temperature of the test.

What is the significance of temperature?

Temperature of an assessment can be referred to or considered as the amount of measurable heat or coldness present in a constrained environment, which is the area of study of an assessee. Cold line ingredients shall not exceed a temperature of above 5 degrees Celsius.

In a situation where the temperature of the cold line ingredients exceeds a clock of 5 degrees Celsius, it is advisable to lower the temperature and bring the temperature to as cooler environment as possible to make the environment suitable for an assessment.

Therefore, the significance regarding the temperature of cold line ingredients has been aforementioned.

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Suppose that you run a bank and you decide to merge with a financial services company so that you can offer your customers stocks as well as simpler investment tools, such as checking and savings accounts. When the merger occurs, you will have to restructure your company so that you don’t have duplicate efforts and so all of the employees in the new company have clearly defined work goals. This is an example of ---________, because you will move the company from an old state to a new state during a controlled period of time.

Answers

This is an example of change management because you will move the company from an old state to a new state during a controlled period of time.

What is change management?

It should be noted that change management is the approach to transition of the goals of an organization for a period of time.

In this case, when the company move the company from an old state to a new state during a controlled period of time, the change management is illustrated.

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For a professional athlete, making money off of products that use their likeness is an example of what concept?

Answers

For a professional athlete, making money off of products that use their likeness is an example of Name, Image, and Likeness deals.

What are name, image, and likeness deals?

Name, image, and likeness deals are commercial endorsements that give publicity to professional and college athletes, who lend their names, images, and likeness to companies to leverage for their product brands.

Using marketing and promotional endeavors, companies can use the athlete's name, image, and likeness to create customer-attractive brands for their products.

These deals provide opportunities for the athletes to make money by permitting the business entities to use their name, image, and likeness to market and sell products.

Thus, while the agreements are called “NIL” deals, professional athletes use them to make money.

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Cogswell cola purchased a machine for $237,500. The firm paid another $5,750 for delivery and installation. In addition the firm will have to hire another employee and pay them $50,000 per year to run the machine. What is the initial outlay for this machine?.

Answers

Based on the cost of purchasing the machine and the delivery and installation fees, the initial outlay is $243,250

How much is the initial outlay?

This can be found as:

= Cost of purchasing machine + Installation and delivery cost

Solving gives:

= 237,500 + 5,750

= $243,250

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how lack of planning can affect getting the job done as a hospitality supervisor?

Answers

The lack of planning can affect getting the job done as a hospitality supervisor as it can bring about high risks.

What is planning?

It should be noted that planning simply means the stores that are put in place to achieve a desired goal.

In this case, the lack of planning can affect getting the job done as a hospitality supervisor as it can bring about high risks in the company.

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A company has Liabilities of $23,500 and Stockholders’ Equity of $56,500. How
much does the company have in Assets?

Answers

Answer: 80,000

Explanation:

Assets = Liabilities + Stockholders' equity = $23,500 + $56,500

The company's assets, an orchestra of resources and potential, amount to $80,000.

Liabilities: Liabilities are the financial footprints that a company leaves behind, representing the promises made to others to repay debts and fulfill obligations.

Stockholders' Equity: Stockholders' equity embodies the company's heart and soul, reflecting the collective contributions of its owners and shareholders, ultimately shaping the residual value that belongs to them.

Assets: Assets are the vibrant lifeblood coursing through a company's veins, encompassing all the resources it possesses, both tangible and intangible, that fuel its potential for growth and prosperity. They are the seeds of future possibilities that blossom into success.

Calculating the company's total assets, by using the accounting equation:

Assets = Liabilities + Stockholders' Equity

Assets = $23,500 + $56,500

= $80,000

Therefore, the company has $80,000 in assets.

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Suppose that the federal budget is balanced when GDP is at potential GDP. If equilibrium GDP falls below potential, please explain how and why government transfer payments would change; how and why tax receipts would change; how and why the budget would change.

Answers

The federal budget is the difference between the income of the government and its expenditure as illustrated in the GDP.

How to explain the information?

The income of the government is tax revenue and when expenditure is more than the income, the budget is said to be in deficit. Potential GDP is the maximum GDP that an economy is able to produce with the given level of resources in the long run. In times of recession, the actual GDP is less than the potential GDP, which means the output produced is less than the capability of the economy.

Inn such periods, GDP is low, unemployment is very high and aggregate demand is also very low. When the economy is in recession, the income of the people falls and thus, the tax they pay out of their incomes also falls. Therefore, the tax receipts fall due to a fall in income.

On the other hand, in recessions, the government uses expansionary fiscal policy which directly injects money by either increasing government spending or reducing the tax rate. Therefore, when the tax rate falls, the tax revenue or tax receipts fall. The government spends money on the public to increase social welfare.

The budget of the government is the difference between tax receipts and transfer payments. When the tax receipts fall and transfer payments rise. Thus, the budget of the government falls and the federal budget is said to be in deficit.

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on october 1 a client pays a company the full 12000 balance of a year long contract. Using the accrual method what is the unearned revenue as of December 31

Answers

Based on the amount the client paid on October 1, the unearned revenue as at December 31 is $9,000.

How can the unearned revenue be found?

First, find the monthly revenue:

= 12,000 / 12

=$1,000

From October 1 to December 31 is 3 months so 3 months of revenue has been recognized.

Unearned revenue is:

= 12,000 - (3 x 1,000)

= $9,000

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D
Question 23
According to John Maynard Keynes, when government invests one
billion dollars into the economy what should occur? (Standard 4.3)
2 pts
O The one billion dollars will have an impact greater than one billion dollars due
to the multiplier effect.
O Consumer spending should decrease by one billion dollars.
O I have no idea what the answer is.
O The government should adjust the tax levels in order to gain addition funds to
pay for the investment.
O The government's action should slow down economic activity.

Answers

John Maynard Keynes believed that The one billion dollars will have an impact greater than one billion dollars due to the multiplier effect.

What did John Maynard Keynes believe?

Keynes was a major advocate for the government spending money in the economy to induce economic growth.

He believed that there was a multiplier effect that would lead to any amount the government invested in the economy, having a greater impact than this investment.

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In the economy of Wrexington in 2008, consumption was 60% of GDP, government purchases were $212, imports were $67 and 67% of the value of exports, investment was one-half of the value of consumption. What was Wrexington’s GDP in 2008?

Answers

Based on the consumption, investment, imports and exports, the GDP for Wrexington in 2008 was $2,450

How much GDP did Wrexington have?

The exports were:

= 67 / 0.67

= $100

The GDP is x:

GDP = Consumption + Government spending + Investment + Net exports

x = 0.6x + 212 + (0.6 x 0.5 × x) + (100 - 67)

x = 0.9x + 245

0.1x = 245

x = $2,450

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outline and clarify the three types of safety controls with examples and explain when hierarchical preferences of safety control apply?​

Answers

Answer:

define five runs of hierarchy of contains elimination substitution engineering controls editing status control and personal protective equipment

Which of the following is true regarding images on a website?

Answers

Use HTTPS:// and not HTTP:// of the following is true regarding images on a website's structure and navigation.

Option B) Whenever possible, use HTTPS:// and not HTTP:// when creating new web pages.

Images Grab Attention and Evoke Emotions

Images are an easy way to improve the user experience of your website. 90% of all the information we perceive and transmit to our brain is visual. Images help grab attention and guide the visitor's eye.

Choosing high-quality images that are interesting, high resolution, and appropriately sized will make your site look more professional. Avoid images that can be easily ignored, such as B. Blurry or too small images.

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Disclaimer: The question was incomplete. Please find the full content below.

Question

Which of the following is true regarding images on a website's structure and navigation?

A) A website’s structure should be at least five layers.

B) Whenever possible, use HTTPS:// and not HTTP:// when creating new web pages.

C) It is best to have several pages that are not internally linked.

D) A higher bounce rate typically leads to more conversions.

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ASAP I WILL GIVE BRAINEST

A good theory is hard to understood, while simple enough to capture the key features of the object or situation being studied.

True

False




Events that occur locally, or nationally, impact the rest of the consumers and producers in this country.

True

False





Microeconomics and macroeconomics are not separate subjects, but rather complementary perspectives on the overall subject of the economy.

True

False




Most real-world industries will either be a perfect competition or a monopoly and will not fall in the middle ground of market structures.

True

False

Answers

Based on economic theory, the true and false statements on the economy are:

True:

Events that occur locally, or nationally, impact the rest of the consumers and producers in this country.Microeconomics and macroeconomics are not separate subjects, but rather complementary perspectives on the overall subject of the economy.

False:

A good theory is hard to understood, while simple enough to capture the key features of the object or situation being studied.Most real-world industries will either be a perfect competition or a monopoly and will not fall in the middle ground of market structures.

What is the economy like?

In order to explain the economy, economists turn to economic theory which are to be easy to understand and complex enough to capture the key things that are being studied.

Industries in the real world are often not fully purely competitive or a monopoly but instead fall somewhere in the middle.

Microeconomics and macroeconomics are not different but instead focus on different perspectives of an economy and therefore help explain how a local or national event can affect an entire nation.

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Determine whether the outcome is a Type I error, a Type II error, or a correct decision.

A test is made of H0: m = 45 versus H1: m is not equal to 45. The true value of m is 45, and H0 is not rejected.

Correct Decision
Type II
Type I

Answers

The true value of m is 45, and H0 is not rejected, than the correct decision is Type II.

condition:-

H0: m = 45  VS  H0: m ≠ 45

The true value of m = 45

H0 is not rejected, & H0 is not rejected.

∴ here we not reject the when H0 is not true hence is is a type II error.

H0 is rejected.

∴ Here we reject the H0 when H0 is true hence it is a type I error

A type II error occurs if one fails to reject the null hypothesis when the alternative is True.

A type I blunders is a fake high-quality end, whilst a kind II errors is a false bad conclusion. making a statistical decision always includes uncertainties, so the risks of creating those mistakes are unavoidable in speculation trying out.

A type I error is a type of fault that takes place throughout the hypothesis checking out process when a null hypothesis is rejected, although it is correct and must no longer be rejected.

Decision error confer with the probability of creating a wrong conclusion while doing hypothesis checking out. when a researcher sets out to do a examine, she usually has a speculation, or a prediction of what she thinks the effects will be.

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Outline the Operational Risk events that JP Morgan Chase & Co has experienced over the last 5 years

Answers

Some operational risk events faced by JP Morgan and other firm are:

Internal fraudExternal fraudDamage to physical assetsBusiness disruptionSystems failures

What is an operational risk event?

This refers to an incident or experience that has caused or that has a potential to cause some material loss to the firm either directly or indirectly with other incidents.

Some example of an operational risk involves some employee errors, criminal activity like fraud, physical events etc.

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If a project costing $92000 has a profitability index of 1 and the discount rate was 12%, then the present value of the net cash flows was

a. undeterminable.
b. less than $92000.
c. $92000.
d. greater than $92000.

Answers

The present value of the net cash flows was $92,000.

Given,

Project costing = $92000

Profitability index = 1

the discount rate was 12%

The profitability index (PI) quantifies the allure of a project or investment.

The present value of anticipated future cash flows is divided by the project's initial investment to determine the PI.

A PI of at least 1.0 is considered to be a decent investment, with higher levels indicating more alluring projects.

Using the Profitability index formula,

Profitability index = Net Present value of cash inflows / Initial Investment

1 = Present value of cash inflows / $92,000

Present value of cash inflows = $92,000

Hence, the present value of the net cash flows was $92,000.

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why are professions important?​

Answers

Profession is important bcz it take part in each situation of your life, if you have the profession of something u mostly like will help you in every situation of your life that’s why it is more important

20pts
Income and education both represent which type of market segmentation?
O A demographic
OB. psychographic
OC. polygraphic
O D. metrographic

Answers

Answer:

Demographic

Explanation:

Income range and education levels can both be used as targeted demographics.

how do you find the total fixed cost using the table

Answers

Answer:

Total cost (TC) = Total variable cost (TVC) + Total fixed cost (TFC)

Therefore,

Total fixed cost = Total cost - Total variable cost

hope am helpful

Answer: Total fixed cost= Fixed cost- total variable cost

Explanation: you should add the fixed cost and the variable cost then the answer you get by adding the fixed cost and the variable cost is the total fixed cost.

use the below way to find the Total fixed cost;

Fixed cost= Fixed cost (TC) + Variable cost (TVC)

then to get the total fixed cost;

Total fixed cost= Fixed cost- total variable cost

4. You are making a punch for an upcoming party. The recipe calls for 2½ parts ginger ale to 4/5
parts grenadine to 1% parts vodka. If your punch bowl can hold 8.5 litres, how much (in litres)
each ingredient is needed? Round the answers to two decimals as needed.

Answers

Based on the ingredients and drinks needed to make a punch bowl, the quantity of each ingredient that is needed is:

4.55 liters of ginger ale 1.45 liters of grenadine 2.5 liters of vodka

How much of each ingredient is needed?

Assuming that the amounts of each ingredient is x, the formula would be:

8.5 = 2.5x + 0.8x + 1.375x

Solving gives:

4.675x = 8.5

x = 8.5 / 4.675

=  1.818181

Using this value of x, we can then find the quantity of vodka needed to be 2.5 liters.

Grenadine would need 1.45 liters and Ginger Ale would need the highest amount of 4.55 liters.

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"Do what you do best" is most consistent with which target marketing strategy?
O Concentrated
O Differentiated
O Undifferentiated
O Aggregated
O Sales-oriented

Answers

Do what you do best" is most consistent with undifferentiated target marketing strategy.

What is marketing strategy?

This is when an organization or company devised means of promoting their products to the target audience.

Undifferentiated is when a marketer overlooks the market's segment distinctions and make use of a marketing plan designed to appeal to as many individuals as possible.

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Question 4 of 20
A company has a net sales revenue of $250,000. Its cost of goods sold is
$180,000. Using vertical analysis, what percentage of its revenue is spent on
its goods?
OA. 1.30%
OB. 13%
OC.7.20%
OD. 72%

Answers

the percentage of 250000 to 180000 is 72% or answer D

what systems are available and specifically the financial benefits iy holds for the user and owner.​

Answers

Answer:

A financial management information system generates data that recipients find to be relevant to their decision-making and reporting processes.

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FILL IN THE BLANK the fair and ______ credit transactions act was passed in response to the growing number of ______ cases. tension causes degradation of ___________ by a protease at the spindle assembly checkpoint. Two thin parallel slits that are 0.010 mm apart are illuminated by a 633 nm laser beam.(a) On a very large distant screen, what is the total number of bright fringes (those indicating complete constructive interference), including the central fringe and those on both sides of it? Solve this problem without calculating all the angles! (Hint: What is the largest that sin ? can be? What does this tell you is the largest value of m?)(b) At what angle, relative to the original direction of the beam, will the fringe that is most distant from the central bright fringe occur? a die is rolled. find the probability of the given event. a) the number showing is a six. b) the number showing is an even number. military service provided opportunities for women and minorities to improve their socioeconomic positions for the wars duration, while also leading to debates over racial segregation.T/F Does a fluid obeying the clausius equation of state have a vapor-liquid transition? And why? FILL IN THE BLANK The part of the brain that serves as a sort of mental clipboard for holding informationneeded to guide organized behavior and for regulating attention is the ______. calculate the temp. (in kelvin) of a 1.50 mol of a sample of a gas 1.25 atm and a volume of 14 L An ecological reserve in Brazil has pygmy sloths and maned sloths. A veterinarian working thererandomly selected eight adults of each type of sloth, weighed them, and recorded their weights in pounds.pygmy sloth: {14, 15, 16, 16, 16, 16, 17, 18}maned sloths: {10, 11, 11, 12, 12, 12, 14, 14}(a) Calculate the mean for each type of sloth. Show all work.(b) Calculate the MAD for each type of sloth. Show all work.(c) Calculate the means-to-MAD ratio for the two types of sloths. Show all work.(d) What inference can be made about the weight of both types of sloths? Explain.55 point 7. compute the surface area of the portion of the plane 3x 2y z = 6 that lies in the rst octant. Select the values that are solutions to the inequality x2 + 3x 4 > 0. compute the minimum mean square estimate of x given the event a={x PLS HELP. Two Numbers add to K. If you double the smaller number and halve the larger number, then the two new number are equal. These two equal numbers add toa)5/6 K b)4/5 K c) 3/4 K d) 2/3 K e)K the companys income statements reported cost of goods sold of $150,498 million for the year ended september 30, 2017. Required: 1. Assume that AmerisourceBergen adjusts the LIFO reserve at the end of its quarter. Prepare the September 30, 2017, adjusting entry to record the cost of goods sold adjustment. 2. If AmerisourceBergen had used FIFO to report its inventories, what would cost of goods sold have been for the quarter ended September 30, 2017? Identify the explanatory and the response variable. A farmer wants to determine if the temperature received by similar crops can be used to predict the harvest of the crop. The explanatory variable is _________ The response variable is ____________ you should make sure that unavailable screen options are either dimmed (also called ____) or removed. the combination of the two sidechains of the given compounds leads to the formation of a special bond. identify the type of bond formed. as mentioned in the lyrics of the star-spangled banner, a rampart is a what? If there are 16 chromosomes in the egg cells of a diploid organism, how many chromosomes would be found in its skin cells? A single toss of fair coin results in either 0 or 1 head, each with probability 1/2. Define h= number of heads obtained on a single toss. The mean of h is 0. 5 and the standard deviation of h is 0. 5. Suppose