Question
A police officer claims that the proportion of drivers wearing a seat belt in a certain area is less than 40%.
To test this claim, the officer collects a random sample of 80 drivers and monitors if the driver was wearing a seat belt.
From this sample of 80 drivers, the police offers observes that 34 were wearing seat belts.
Assume the conditions needed to conduct a one sample proportion test are satisfied.
The setup for the null and alternative hypothesis is as follows:
H : p = 0.40; H, :p < 0.40, which is a left-tailed test.
Compute the test statistic and p-value for this Hypothesis test using Excel and round your answers to 3 decimal places.

Answers

Answer 1

Answer:

0.456

0.324

Explanation:

The null and alternative hypothesis :

H0 : p = 0.40; HA :p < 0.40

Test statistic :

(Ph - P) / sqrt[(p*(1-p))/n]

Ph = X / n

X = 34 ; n = sample size = 80

Ph = 34 / 80 = 0.425

(0.425 - 0.4) / sqrt[(0.4(0.6)) / 80]

0.025 / sqrt(0.003)

0.025 / 0.0547722

Test statistic = 0.4564359

Test statistic = 0.456

Using the P-value from Zscore calculator :

Significance level of 95% ; one tailed

Z statistic value = 0.456

P value = 0.324195

= 0.324 ( 3 decimal places)

Answer 2

Answer:

test statistic=0.456  p value=0.676

Explanation:


Related Questions

How much principal must be
invested to earn $36 in 1/2 a year
at an interest rate of 8%?

Answers

Answer:

Simple interest: $70.56

Annually compounded Interest: $90.65

Explanation:

Answer
900$

let our principal be P
as SI = P x R x T / 100
=> P x 8 x 1 / 100 x 2 = 36
=> 0.04 x P = 36
=> P = 36 / 0.04
=> P = 900$

The typical number of courses to finish a major is:
O A. 12.
O B. 15.
O C. 10.
D. 22.

Answers

22

i think, not sure. sorry if im wrong :/
Answer:

D - 22 courses.

what is two plus two

Answers

Answer: 4

Explanation:

Two plus two equals four

ADM Calling lead source in sales team

Answers

The ADM Calling lead source in sales team is known to be made up of

Lead CaptureLead AssignmentView Enquiry or Lead HistoryTargets vs. AchievementRole Based Permissions Dashboards & Reports, etc.

What is ADM lead?

ADM Lead Management is known to be one that gives room for a person to be able to put together and streamline the enquiries that are said to be made from a lot of channels to one cloud-based module.

Note that this is one that helps a person to be able to see company details and also all of their contact records, and see communication history, and others without any form of stress.

The lead source is seen as the main channel via which a lead starts to discovers a company.  Therefore, The ADM Calling lead source in sales team is known to be made up of

Lead CaptureLead AssignmentView Enquiry or Lead HistoryTargets vs. AchievementRole Based Permissions Dashboards & Reports, etc.

Learn more about sales team from

https://brainly.com/question/13656349

#SPJ1

In Center City, the ratio of people to dogs is 4:1, and the ratio of dogs to cats is 3:2. What is the ratio of people to cats?

Answers

Answer:

let's say theres 30 dogs

so 4:1 not simplified is 120:30

the ratio of dogs to cats would be 30:20

(3x10 = 30 and we have to do 2x10 as well which would equal 20)

120:20 would be the Ratio of ppl to cats

simplified

120/20 = 6

20/20 / 1

6:1

A store clerk is paid $10.75/ hour and a store assistant manager is paid $16.25/ hour. How long would it take the store managerto make $500 or more than the store clerk? Round to the nearest hour. Show all work.

Answers

Clerk wages + 500 = manager wages
10.75x + 500 = 16.25
500 = 5.5x
x = 91 hours

Check:
10.75 * 91 = 978.25
16.25 * 91 = 1478.75
1478.75 - 978.25 = 500.5 :)

It will take approximately 91 hours for the store manager to make $500 or more than the store clerk.

If the store clerk is paid $10.75/ hour and the store assistant manager is paid $16.25/ hour, the difference in their pay per hour will be expressed as:

The difference in the amount earned per hour = 16.25 - 10.75

The difference in the amount earned per hour = $5.5

This means that the store assistant manager will collect $5.5 more than the store clerk in one hour. This can be expressed as:

$5.5 = 1 hour

To determine how long it will take the store manager to make $500 or more than the store clerk, we can write:

$500 = x

Divide both expressions:

[tex]\dfrac{5.5}{500} =\dfrac{1}{x} \\Cross \ multiply\\5.5x = 500 \times 1\\5.5x = 500\\x=\frac{500}{5.5}\\x= 90.9 \ hours[/tex]

This means that it will take approximately 91 hours for the store manager to make $500 or more than the store clerk.

Learn more here: https://brainly.com/question/20335698

which of these best describes a biome

Answers

Answer:

Could you describe your question more? I think you forgot to attach a picture.

Explanation:

Answer:

A biome is a large area characterized by its vegetation, soil, climate, and wildlife. ... Grasslands are open regions that are dominated by grass and have a warm, dry climate. There are two types of grasslands: tropical grasslands (sometimes called savannas) and temperate grasslands

Explanation:

How many liters each of a 50% acid solution and a 75% acid solution must be used to produce 90 liters of a 60% acid solution? (Round to two decimal places if necessary.)

Answers

The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

What is the litters about?

Note that:

We take x = volume of 25% solution.

We take y = volume of 65% solution.

So, Equation of total volume:

x + y = 80

Hence the equation of amount of acid:

0.25x + 0.65y = 0.45(80)

0.25x + 0.65y = 36

Solve x + y = 80 for x.

x = 80 - y

Then Substitute into the second equation.

0.25(80 - y) + 0.65y = 36

20 - 0.25y + 0.65y = 36

0.4y = 16

y = 40

x + y = 80

x + 40 = 80

x = 40

Therefore, The numbers of liters that is needed is 40 liters of 25% solution and 40 liters of 65% solution.

Learn more about liters from

https://brainly.com/question/17435066

#SPJ1

In a​ poll, 1002 adults in a certain country were asked whether they favor or oppose the use of​ "federal tax dollars to fund medical research using stem cells obtained from human​ embryos." Based on the poll​ results, it is estimated that 46​% of adults are in​ favor, with a margin of error of 3 percentage points. Use the given statistic and margin of error to identify the range of values​ (confidence interval) likely to contain the true value of the population parameter

Answers

The range of values likely to contain the true value of the population parameter is from 43% to 49%.

What is Population parameter?

This is referred to a statistical measurement for a particular population and is usually fixed.

We were told that the margin of error is 3 percentage points. This therefore means:

(46 ± 3) % = (46-3)% to (46+3)%

Therefore the range of values is 43% to 49%.

Read more about Margin of error here https://brainly.com/question/24289590

#SPJ1

to find out what information people are posting about you online it is important that you closely monitor
a. your text records
b. the social media websites you participated in
c. your insurance records
d. your phone records​

Answers

B. The social media websites you participated in

Answer:

B

Explanation:

Helllppp plsss (SAT PREP) Find the value of x

Answers

Answer:

2x+90°+20°=180°

2x+110°=180°

2x=180°-110°

2x=70°

x=35°

g) In a college 60% of students come from rural areas and 40% come from urban areas. On the

average 30% of students from rural areas study science and 50% of the students from urban areas study

science. A student is selected at random and is found to be a student of science. Find the probability

that he comes from a rural area.​

Answers

Answer:

100-(50+30)=100-80=20%

Explanation:

20% is the answer

hope it helps you

please mark me as brainlist

The probability that he comes from a rural area is to be calculated as

​100-(50+30)=100-80=20%. So, the probability that he comes from a rural area.​ So, the probability is 20%.

What is probability?

Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive, where 0 indicates an impossible chance of occurrence and 1 denotes the certain outcome of an event. Joint probability refers to a statistical measure that determines the probability of two events occurring together and at the same point in time.

Joint probability is the probability of event Y occurring at the same time that event X occurs. Hence, joint probability is a measure of two events happening at the same time and can only be applied to situations where more than one observation can occur at the same time.  Mathematically, it is given by P (A and B) = P(A) * P(B) As in the given situation, the probability estimated is the probability to two events that iPhone is defective and it is manufactured by company A occurring at the same time, it is a joint probability.

Therefore, Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive.

Learn more about Probability on:

https://brainly.com/question/29381779

#SPJ2

Which statement BEST summarizes how climate change can affect the mass migration of humans on Earth?

A
Climate change can increase the risks of natural hazards in a location, increasing the number of humans that migrate to it.

B
Climate change can increase the amount of natural resources available in areas, attracting humans to migrate to those locations.

C
Climate change can decrease the carrying capacity of areas, forcing humans to migrate to other locations where their needs can be met.

D
Climate change can decrease the rate of natural processes in a location, causing humans to migrate to areas where processes occur quickly.

Answers

Answer:

A best summarizes how climate change can affect the mass of migration of humans on earth

The statement that best summarizes how climate change can affect the mass migration of humans on Earth is climate change can decrease the carrying capacity of areas, forcing humans to migrate to other locations where their needs can be met. Therefore, option C is correct.

What is migration?

Migration is the process of moving from one place to another for an extended period of time. It can be a temporary or permanent relocation and can occur voluntarily or involuntarily.

People migrate for various reasons, including seeking better economic opportunities, fleeing persecution or conflict, or environmental factors such as droughts or natural disasters.

Migration can occur within a country or across international borders. It can be a personal decision or a collective one, such as when groups of people move together as families or communities.

Migration can have both positive and negative impacts on individuals and society, including economic growth, cultural exchange, and social tensions. It is an important phenomenon that has shaped human history and continues to shape the world we live in today.

Learn more about migration here:

https://brainly.com/question/24605163

#SPJ2

Please help, ACT Is close and I need help with this kind of question.

If x^2 - y^2=56 and x-y=8, what is the value of x+y?

A- 10, b-8, c-9 d-7

Answers

jssjsjdhsjdjdjskakakaksks

Answer:

if you just set x² - y² -56 = 0 then square root x² - y² -56 the answer would be x- y -8 . then move 8 to the right. the final answer is x-y = 8

A rainstorm in Portland, Oregon, has wiped out the electricity in about 7% of the households in the city. A management team in Portland has a big meeting tomorrow, and all 6 members of the team are hard at work in their separate households, preparing their presentations. What is the probability that none of them has lost electricity in his/her household? Assume that their locations are spread out so that loss of electricity is independent among their households.
Round your response to at least three decimal places.

Answers

The probability that none of them has lost electricity in his/her household is 64.7%.

Probability

Given:

Electricity wiped =P=7%

Team members= n=6 members

Hence;

P(x = 0) = (6C0)(0.07^0)(1-0.07)^6

P(x = 0)= (1)(1)(0.93)^6

P(x = 0)=0.6469×100

P(x = 0)=64.7%

Therefore the probability that none of them has lost electricity in his/her household is 64.7%.

Learn more about probability here:https://brainly.com/question/13699593

#SPJ1

Hi, = P(x = 0) = (6C0)(0.05^0)(1-0.05)^6 = (1)(1)(0.95)^6 = 0.735 Edited by abozer on ...

A comet is a small object that also orbits the Sun. Comets have highly elliptical orbits. Based on Kepler’s laws, which statement is MOST LIKELY correct about comets? A Comets travel with a uniform speed. B Comets do not have the Sun as a focus. C Comets spend most of their time close to the Sun. D Comets spend most of their time far from the Sun.

Answers

Answer:

D. Comets spend most of their time far from the Sun.

Which of the following elements must be present on a fertilizer label?
iron
manganese
copper
potassium

Answers

Answer:

 Potassium, Ive learned about this before. Goodluck!

Explanation:

If warming trends continue, which of the following could happen to the glacial ecosystem? Choose ALL that apply.

A
Glacial runoff will begin earlier in the year, and as a result, streams will also warm earlier. Warmer streams will affect native fish populations.

B
Glacial melt and warmer temperatures will increase humidity levels in the ecosystem. This will decrease fish populations that thrive in colder climates.

C
Glacial loss will cool parts of the ecosystem, but because overall temperatures are warmer, precipitation will increase. Increased rain will raise stream and lake levels and increase fish populations.

D
Glaciers will melt into nearby bodies of water. The water levels will rise and create an overall cooling effect on the ecosystem, resulting in a net zero temperature change. The fish population will be unaffected.

E
Glaciers will melt into nearby oceans, causing the salt levels of the ocean to go down. This will increase the available habitat for fish and cause an increase in the nearby population.

Answers

If global warming trends continues, the options that could happen to the glacial ecosystem are;

"Glacial melt and warmer temperatures will increase humidity levels in the ecosystem. This will decrease fish populations that thrive in colder climates." (Option B)

What is global warming?

Global warming is the name given to the occurrence of the continual melting of the ice cap and the negative effects that this can have on the earth.

Thus, it is right to state that glacial melt will decrease fish populations that thrive in the colder climates.

Learn more about global warming at;
https://brainly.com/question/3553382
#SPJ1

Answer: C and E

Explanation:

I just took the test trust

what state is called the sunshine state​

Answers

Answer:

Florida

Explanation:

Nickname of U.S. state

What is the purpose of taking a personality inventory assessment?
O A.
OA. to find out what personality traits you should acquire for a successful career
B.
to identify your personality traits and relate them to a suitable career
O.C. to compare your personality traits with those of successful people in different
O D.
Identify aspects of your personality that you can improve with the help of am

Answers

I’m pretty sure it’s A

I need help with 2 questions, I don't understand how to do them. Any help would be greatly appreciated!

Answers

The length of CE is 3.6 and the radius of the circle is 2

The length of CE

Start by calculating the length of AD using:

AD^2 = AC^2 - CD^2

This gives

AD^2 = 10^2 - 6^2

AD^2 = 64

Take the square roots

AD = 8

Represent CE with x.

So:

AE = 10 - x

Calculate ED using:

ED^2 = CD^2 - CE^2

ED^2 = AD^2 - AE^2

So, we have:

AD^2 - AE^2 = CD^2 - CE^2

This gives

8^2 - (10 - x)^2 = 6^2 - x^2

Expand

64 - 100 + 20x - x^2 = 36 - x^2

Add x^2 to both sides

64 - 100 + 20x  = 36

Evaluate the like terms

20x = 72

Divide by 20

x = 3.6

Hence, the length of CE is 3.6

The radius of the circle

The equation is given as:

x^2 + y^2 + 6x + 5y = -45/4

Rewrite as:

x^2 + 6x + y^2  + 5y = -45/4

Take the coefficients of x and y

Divide them by 2, square the result and add the result to both sides.

So, we have:

x^2 + 6x + (6/2)^2 + y^2  + 5y + (5/2)^2= -45/4+ (6/2)^2 + (5/2)^2

This gives

x^2 + 6x + (6/2)^2 + y^2  + 5y + (5/2)^2= 4

Express as perfect squares

(x + 3)^2 + (y + 5/2)^2 = 4

The circle equation is represented as:

(x - a)^2 + (y - b)^2 = r^2

Where r represents the radius

By comparison, we have:

r^2 = 4

This gives

r = 2

Hence, the radius of the circle is 2

Read more about circle equation at:

https://brainly.com/question/10618691

#SPJ1

(1) Farmer Ben has only ducks and cows 21 in total. He can’t remember how many of each he has. He knows
that the animals have a total of 52 legs. Assuming that each animal has all legs intact and no extra
limbs, how many of each animal does farmer Ben have? Draw a clear diagram to answer this question.


(2) On a merry-go-round, 12 horses are evenly spaced on the outside perimeter. Abe is opposite to the first
horse. It takes 4 seconds for the fourth horse to reach Abe. How long will it take the merry-go-round to
go around once? Draw a clear diagram to answer this question. Make a Diagram and solve this problem.

(3) Charmin’s daughter has $6.00 she wants to spend on a comic books and superhero cards. Comic books
cost 75 cents each, and deluxe packages of superhero cards cost $1.50 each. List all the ways she can
spend all of her money on comic books, superhero cards , or both.

(4) In how many ways can one add only three positive even numbers and get 22? Make a systematic list
and show all the possibilities.

Can somebody plzz help me on these for questions i really need to pass this and show work

Answers

Answer:

Answer of #1

5 Cows and 16 Ducks

Explanation:

4x + 2(21-x) = 52

4x + 42 - 2x = 52

2x + 42 = 52

     - 42 - 42

2x = 10

x = 5 Number of cows

21 - 5 = 16 ducks.

Checking: The 5 cows have 5 x 4 = 20 legs. The 16 ducks have 16 x 2 = 32 legs.

32 + 20 = 52

According to the text, which THREE phenomena are a direct result of, or are made worse by, human activities?

A
reduction in seasonal river flooding

B
creation of barrier islands

C
fluctuation of sea levels

D
loss of river sediments

E
deposition of delta sediments

F
filling in of wetlands

Answers

Human activities have worsened:

fluctuation of sea levels: Option Creduction in seasonal river flooding; option Closs of river sediments; option D

How does human activity affect the coastal environment?

Human activities have been known to cause or worsen adverse environmental conditions.

Human activities such as overfishing, lack of conservation of water, and pollution of water bodies have resulted in several phenomena such as:

fluctuation of sea levelsreduction in seasonal river floodingloss of river sediments

In conclusion, human activities negatively affect the coastal environment.

Learn more about human activities and coastal environment at: https://brainly.com/question/3328475

#SPJ1

What is the meaning of ethics? Check all of the boxes that apply.

behavior that is good for everyone

doing whatever you want

following the rules

stealing other people’s information

behaving in a way that would be easy to defend

Answers

Answer:

behaviour that is good for everyone

Explanation:

i think that the first one is correct because following the rules, what if the rules permits u or forces u to do something which is morally worng .Ethics is related to both morals and principals

Answer:

A C E

Explanation:

Choose THREE agricultural activities that humans perform to minimize their impact on climate change.

A
drain wetlands

B
plant cover crops

C
leave land untouched

D
use additional fertilizers

E
breed drought tolerant plants

F
clear additional land for livestock

Answers

Answer:

B,C and E are the three agricultural activities that humans perform to minimize their impact on climate change.

Can someone recommend a page to make concept maps?

Answers

If your asking about like concept webs that branch from a bigger picture to smaller concepts, I actually use PowerPoint for this. They have a smart art feature and you can make all sorts of webs and flowcharts. Hope that helps!

You need to have a password with 5 letters followed by 2 odd digits between 0 and 9, inclusive. If the characters and digits cannot be used more than once, how many choices do you have for your password?

Answers

5 letters (26 choices without replacement)
26*25*24*23*22

2 odd digits (5 choices w/o replacement)
5*4

26*25*24*23*22*5*4
= 157,872,000 choices

Which sentence about flexible spending accounts (FSAs) is true?
O A. The funds in the account remain for as long as you're employed by the company sponsoring the FSA.
O B. Contributions are taxed when funds are withdrawn to use on qualifled expenses.
© C. Contributions are made with pretax dollars.
© D. There Is no
contribution limit.

Answers

Answer:

The Answer is C

Explanation:

One of the many tax-advantaged bank accounts that might save your payroll taxes is a flexible spending account. There is no contribution limit. This sentence is true about flexible spending accounts( FSAs ).

What is flexible spending accounts ?

One of the many tax-advantaged bank accounts that might save your payroll taxes is a flexible spending account, often called a flexible spending arrangement.

You can use pre-tax money from an Employee Reimbursement Account ( ERA ), also known as a Flexible Spending Account ( FSA ), to reduce the cost of qualified healthcare or child care costs each year.

You have a set amount of time during run out to submit claims for the prior year. Run out periods offer some more time for reimbursement. This is applicable to a Dependent Care FSA, Health FSA, and LPFSA.

Thus, option D is correct.

To learn more about flexible spending accounts, follow the link;

https://brainly.com/question/16969506

#SPJ5

Around half of the electricity used in the United States is powered by burning coal. The United States is a developed country with a high level of carbon emissions. Select TWO realistic actions that could help to provide energy for the United States and also help to lower carbon emissions.

A
Create more fossil fuels.

B
Build additional power plants.

C
Reduce the demand for energy.

D
Use renewable sources of energy.

E
Make products that are more efficient.

F
Develop technology to better harvest fossil fuels.

Answers

The two options would be to reduce the demand for energy and or use renewable sources of energy. Options C and D are correct.

How to reduce carbon emission

The burning of fossil fuels such as coal and crude oil-derived fuels generates a large amount of emissions.

In order to cut down on the emission, the demand for energy needs to be lowered by all means. In addition, instead of using fossil fuels, renewable sources of energy can be used.

Greenhouse gases such as carbon dioxide, oxides of sulfur, and water vapor are produced largely as by-products of burning fossil fuels. These gases form a layer in the atmosphere and trap reflected solar radiation.

By doing so, the increase the average annual temperature of the planet (global warming). The warming of the planet has several negative effects on the climate and the ecosystems as a whole.

Renewable sources of energy, on the other hand, have very little to no greenhouse gas emissions.

More on cutting down on emissions can be found here: https://brainly.com/question/25840172

#SPJ1

are these good to submit they are worth 50 % of my grade

Answers

Answer:

YES

Explanation:

They are perfect

Answer:

yes

Explanation:

Other Questions
Help Please!? Thank You! Another name for the cells in plants and animals issentence?cells help and ill give extra pounts Papa Johns is one of the fastest-growing pizza delivery and carry-out restaurant chains in the country. Presented here are selected income statement and balance sheet amounts (dollars in thousands). Current Year Prior Year Net sales $ 1,242,087 $ 1,242,087 Net income 51,796 22,735 Average shareholders' equity 121,445 134,536 Average total assets 390,143 397,728 Required: 1. Compute ROA for the current and prior years. (Round your answers to 3 decimal places.) Use the information to answer the following question.A population of rabbits lives in a grassy field that is lush and green in summer and covered in snow in winter. At the start of the summer,75% of the population are white rabbits, and the remaining 25% of the population are brown rabbits. In rabbits, white (W) is dominantover brown (w). During the summerthe field where they live experiences a drought. Thesummer drought lasts for two years, throughmany generations of rabbits.Which prediction BEST estimates the expected percent of white and brown rabbits in the population at the end of thedrought?O A. The rabbit population will consist of 0% white rabbits and 100% brown rabbits.OB. The rabbit population will consist of 35% white rabbits and 65% brown rabbits.C. The rabbit population will consist of 95% white rabbits and 5% brown rabbits.D. The rabbit population will consist of 80% white rabbits and 20% brown rabbits. EASY 57 POINTS!!!Give me reasons why the story "Romeo and Juliet" is unrealistic QUICK!!! HELP!! Which major political party is considered more conservative, or "to the right?" between which two consecutive integers does the square root of 830 lie DNA carries the information needed to make proteins. How is this information used to make proteins? Olivia is making scarves. Each scarf will have 3 rectangle, and 2/3 of the rectangles will be purple. How many purple rectangles she need for 2 scarves. The sum of two integers is - 5 and their difference is 11.What are the two numbers Patients buying __________ paid over fifty million dollars. this medicine these medicine this medicines these medicines Sung loo worked 54 hours during a special sale at the store. 10 hours was time and a half, and 4 hours were at double time. Her regular rate is $6.86. How much would Sung Loo make? Are the ratios 2:4 and 5:6 equivalent? yes or no how skateboards works? WILL MARK BRAINLIEST!!12. Paco no(traer) nuestro proyecto para la clase de historia, y laprofesora se enfureci con nosotros.13. Ayer yo no(querer) ir al parque con Ana.14. Sandra y yo(almorzar) en la cafetera de la escuela.15. Los hermanos Coen(producir) una de mis pelculas favoritas.16. La semana pasada, yo(jugar) al ftbol con Paco y Luca. Social,Discuss five importances of democraticgovernaces over dictatorship Suppose we know that the birth weight of babies is Normally distributed with a mean 3500g and a standard deviation of 500g. What is the probability that a baby is born that weighs less than 3100g? disordered eating is often __________.A.an eating disorder that affects numerous teensB.caused by eating irregularly over short periodsC.a precursor for developing a disorder, but not a disorder on its own Diseases from the present age are different from the diseases of the past. Discuss