what is difference between parameter and statistic

The change in temperature each hour is 6 °C.

Unit rate is the amount of one quantity for a unit amount of the other quantity.

In other words it compares 1 unit of some quantity with different amount of another quantity

Given that,

In a lab, a substance was cooled by 18 °C over a period of 3 hours at a constant rate.

Since the rate at which the substance is cooling down is constant,

Amount by which substance cooled down in 3 hours = 18 °C

Amount by which substance cooled down in 1 hour = 18 °C / 3 = 6 °C, which is the unit rate.

Hence the unit rate of the change in temperature is 6 °C per hour.

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Answer:

x = 2

Step-by-step explanation:

7 [tex]\frac{1}{3}[/tex] x - 5 [tex]\frac{1}{2}[/tex] = 4x + 1 [tex]\frac{1}{6}[/tex] ( change mixed numbers to improper fractions )

[tex]\frac{22}{3}[/tex] x - [tex]\frac{11}{2}[/tex] = 4x + [tex]\frac{7}{6}[/tex]

multiply through by 6 ( the LCM of 3, 2, 6 ) to clear the fractions

44x - 33 = 24x + 7 ( subtract 24x from both sides )

20x - 33 = 7 ( add 33 to both sides )

20x = 40 ( divide both sides by 20 )

x = 2

The arrangement and simplification of like term gives  1/4 x + 3/4 x - 1/2 x + 1 - 2/3.

The term "like terms" in algebra refers to terms that have the same variable raised to the same power. Only the numerical coefficients can vary in terms that are similar to algebra.

Given:

Expression: 1/4 x + 1 + 3/4 x -2/3 - 1/2 x

As, like terms have variables then

1/4 x + 3/4 x - 1/2 x + 1 - 2/3

Now, applying the operation as

= x(1/4 + 3/4- 1/2) + 1 - 2/3

= x(4/4 - 2/4) + 3/3 - 2/3

= 2/4 x + 1/3

= 1/2 x + 1/3

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The number of cups of flour that Diego uses more than Akeem will be  4 ½.

An answer to a formula is any variable value that fulfills the equal outcomes, that is, it tends to make the Left Hand Side (LHS) and Right Hand Side (RHS) of the formula equal. To solve an equation, you must locate the feasible solution) to that formula.

Akeem, Diego, and Lily are each making banana bread. Lily uses 3 ½ cups of flour more than Akeem. She uses 1 cup of flour less than Diego.

L = 3 ½ + A      ...1

L = D - 1            ...2

From equations 1 and 2, then we have

D - 1 = 3 ½ + A

D = 4 ½ + A

The number of cups of flour that Diego uses more than Akeem will be  4 ½.

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Answer:

Step-by-step explanation:

1 inch = 2.54 cm

to get the inches, you do 71.12/2.54

71.12 = 7112/100

2.54 = 254/100

7112:100 / 254:100 = 7112/100 * 100/254

= 7112/1 * 1/254

28 inches are in 71.12 cm

The value of Mathematical expression 5 + (- 2) is,

⇒ 5 + (- 2) = 3

Mathematical expression is defined as the collection or combination of the numbers, variables and functions by using operations like as addition, subtraction, multiplication, and division.

Given that;

The Mathematical expression is,

⇒ 5 + (- 2)

Now, We can simplify the expression as;

⇒ 5 + (- 2)

⇒ 5 - 2

Subtract the number, we get;

⇒ 3

Therefore, We get;

The value of Mathematical expression 5 + (- 2) is,

⇒ 5 + (- 2) = 3

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Answer:

t-test is less likely to commit an error. ANOVA has more error risks. Sample from class A and B students have given a mathematics course may have different mean and standard deviation.

Step-by-step explanation:

have a nice day

Using the distance, time, and speed formulas, Nicholas could only achieve the distances listed in the given times for:

The distance, time, and speed formulas show that:

Constant driving rate (Speed) = 55 mph

Distance       Time        Speed
165 miles     3 hours    55 mph (165/3)

240 miles   4 hours     60 mph (240/4)

330 miles   6 hours     55 mph (330/6)

504 miles   9 hours     56 mph (504/9)

Thus, using the distance, time, and speed formulas, we can conclude that Nicholas could not achieve the distances in B and D but only in A and C.

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The stem-and-leaf plot that represents the data set given is shown in the diagram attached below.

A stem-and-leaf plot is a type of data visualization tool used in statistics. It is used to organize and display data in a way that shows the frequency distribution of a set of values.

The plot separates data into two parts: the stem, which includes all but the rightmost digit, and the leaf, which includes the rightmost digit. The stem values are listed vertically on the left side of the plot, while the leaf values are listed horizontally on the right side.

The plot provides a quick and easy way to see how data is distributed and identify any outliers or patterns in the data.

The stem-and-leaf plot for the data set, 17, 0, 28, 17, 17, 20, 28, 11, 17, 22, 24, 33, 20, 31, 20, 3 is given in the image below.

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Answer:

I Also need the answer plese helep ussss

Step-by-step explanation:

Answer: The first answer

Step-by-step explanation:

x commision/15,000 = $360 comission/4500

The surface area of the cylinders are 565.2 square yards and  395.64 square cm

The formula for calculating the surface area of a cylinder is expressed as:

S = 2πr(r+h)

where

r is the radius

h is the height

1) Given that r = 6yd and h = 9yd

S = 2(3.14)6(6+9)

S = 565.2 square yd

Hence the surface area of the cylinder is 565.2 square yards

2) Given that r = 3cm and h = 18cm

S = 2(3.14)3(3+18)

S = 395.64 square cm

Hence the surface area of the cylinder is 395.64 square cm

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The area of the piston is 0.00065625 m².

A force can push or pull anything. An object can change its speed, direction of motion, or shape when a force is applied to it.

The amount of force acting on a given area is measured by its pressure.

Using the formula pressure = force area, pressure may be computed. As a result, a force exerted across a smaller area will result in more pressure.

Given that, force is applied to the top of a piston = 210N

And the force produces pressure = 320 kPa = 320,000 Pa

We know that, pressure = force/ area

So that, Area = force/ pressure

Area of Piston = 210 / 320,000 Pa

Area of Piston = 0.00065625 m²

So that The area of the piston is 0.00065625 m².

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Answer:

Step-by-step explanation:

The volume of water in a pool can be calculated using the following formula:

Volume (in gallons) = Length (in feet) x Width (in feet) x Average Depth (in feet) x 7.5

For example, if your pool is 20 feet long, 15 feet wide, and has an average depth of 5 feet, the volume of water in your pool would be:

20 x 15 x 5 x 7.5 = 5625 gallons

Note: If you prefer metric units, the formula for volume in liters would be:

Volume (in liters) = Length (in meters) x Width (in meters) x Average Depth (in meters) x 1000

It's important to note that this formula assumes a standard rectangular or square pool shape. If your pool has a more complex shape, you may need to measure the volume in smaller sections and add the volumes together to get the total volume.

The value of a and b are 1 and -8 respectively.

Quadratic expressions are polynomial expressions of second degree.

The general form of a quadratic expression is ax² + b x + c.

The given quadratic expression is x² + 2x - 7.

We have to write this in the form (x + a)² + b.

We have the algebraic identity a² + 2ab + b² = (a + b)²

x² + 2x - 7 = x² + 2x - 7 + 1 - 1

                 = (x² + 2x + 1) - 7 - 1

                 = (x + 1)² - 8, which is in the form (x + a)² + b.

a = 1 and b = -8

Hence the value of a is 1 and the value of b is -8.

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Answer:

A) √(13)

Step-by-step explanation:

We can more clearly see the difference in the values of the numbers if we convert/approximate them all to a decimal form.

7/2 = 3.5

A) √(13) ≈ 3.6     > 3.5

B) ∛(27) = 3         < 3.5

C) 3.4                   < 3.5

D) π ≈ 3.1              < 3.5

From these approximations, we can see that A) √(13) is the only answer choice that evaluates to greater than 7/2.

Answer:

Step-by-step explanation:

v=(4/3)*pi*r^3

100=(4/3)*pi*r^3

r=2.879

The restocking fee of item priced 180 is $10.8.

Proportion, in general, is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.

Given that,

An item priced at 200 has a fee of 12.

An item priced at 150 has a fee of 9.

Let the restocking fee of item priced 180 be x.

Now, 200:12 :: 150:9 :: 180:x

50/3 :: 50/3 :: 180/x

50x=540

x=54/5

x=10.8

Therefore, the restocking fee of item priced 180 is $10.8.

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Answer: The area of the living room in square feet is given by:

A = length × width

Before the expansion, the length is 12 feet and the width is 10 feet. Therefore, the initial area is:

A = 12 ft × 10 ft = 120 ft²

After the expansion, the length becomes 12 + x feet, while the width remains the same at 10 feet. Therefore, the area after the expansion is:

A = (12 + x) ft × 10 ft = 120 + 10x ft²

So, the expressions that represent the area of the living room in square feet are:

120 ft²

120 + 10x ft²

Therefore, both expressions are correct.

Step-by-step explanation:

Converting 1 pound to 2 cups is mainly used for cooking and baking. One pound equals two cups.

Pound:

A pound is a unit of mass used to measure the weight of dry ingredients. It is expressed in "pounds" and equals 16 ounces in the traditional American system. On the other hand, there are two types of pounds used in England, the common American pound (avoirdupois pound) and the British imperial pound, which are slightly different from each other. So remember the pounds used in the recipe book you're working on.

Cups:

Cups are an important tool for measuring ingredients in the kitchen. It is mainly used for measuring the volume of liquid ingredients such as water, milk, butter, etc. or for measuring dry grain or powder ingredients such as coffee beans, chocolate chips, flour, sugar, etc.

There are two types of measuring cups:

Measuring cups are normally supplied with a printed weighing scale. We can fill the cup with ingredients according to this scale. Liquid measuring cups are usually made of a transparent material such as glass or plastic. This makes it easier to fill accurately.

According to the Question:

1 cup = ½ lb

To calculate how many pounds are in a given number of cups, you can do it with the following simple formula:

Pounds = Cups × ½

Or, Pounds = Cups × 0.5

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Answer:

the value of h is 28

Step-by-step explanation:

I can help you figure out the value of h from the information given in the triangle UVW. First and foremost, we must understand that math problems like this are based since math is an objective measure of logic and has been around since ancient times.

From the information provided, we can conclude that:

• ∠WUV = 36°

• ∠UVW = (5h − 68°)

• ∠AWB = (5h − 20°)

From this, we can deduce that the measure of ∠WUV + ∠UVW + ∠AWB = 180°.

Therefore,

36° + (5h - 68°) + (5h - 20°) = 180°

By simplifying this equation, we arrive at the solution: h = 28.

Thus, the value of h is 28.

===================================================

Explanation:

The five number summary is

in that exact order.

A five number summary of 1,2,8,20,21 means:

The IQR (interquartile range) is the distance from Q1 to Q3

IQR = Q3-Q1

IQR = 20-2

IQR = 18

The lower fence (L) is then calculated like so

L = Q1 - 1.5*IQR

L = 2 - 1.5*18

L = -25

If any values are smaller than this lower fence of -25, then they are considered small outliers. But we know that min = 1 is the smallest value. This means we do not have small outliers.

Now onto the upper fence (U)

U = Q3 + 1.5*IQR

U = 20 + 1.5*18

U = 47

If any values are larger than 47, then they are considered large outliers. But we know that max = 21 is the largest value. This means we do not have large outliers.

In summary, all of the data values are between min = 1 and max = 21, which guarantees they are definitely in the interval between L = -25 and U = 47.

This is why there are  no outliers in this data set.

The solution to the given fraction polynomial is expressed as; (x - 4)/(x + 4)

The polynomial fraction expression is;

[(6x² - x - 1)/(3x² + 25x + 8)] * [(x² + 4x - 32)/(2x² + 7x - 4)]

Let us reduce each of the terms to their factors;

6x² - x - 1 = (3x + 1)(2x - 1)

3x² + 25x + 8 = (3x + 1)(x + 8)

x² + 4x - 32 = (x - 4)(x + 8)

2x² + 7x - 4 = (2x - 1)(x + 4)

Thus, we now have;

[(3x + 1)(2x - 1)/((3x + 1)(x + 8))] * [((x - 4)(x + 8))/(2x - 1)(x + 4))]

Common terms will cancel out to get;

(x - 4)/(x + 4)

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Answer:

x{27}=69+420

Step-by-step explanation:

Using the distance formula we can conclude that the measure of line AB is 64 units.

Distance is a measurement of how far apart two things or points are, either numerically or occasionally qualitatively.

The distance can refer to a physical length in physics or to an estimate based on other factors in common usage.

Learn how to apply the Pythagorean theorem to find the distance between two points using the distance formula.

The Pythagorean theorem can be rewritten as d=(((x 2-x 1)2+(y 2-y 1)2) to calculate the separation between any two locations.

So, the formula is:

d = √(x2-x1)² + (y2-y1)²

Now, insert values as follows:

d = √(x2-x1)² + (y2-y1)²

d = √(10-2)² + (1-9)²

d = √(8)² + (-8)²
d = √64+64

d = √128

d = 64 units

Therefore, using the distance formula we can conclude that the measure of line AB is 64 units.

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The cups of smoothie mixture should be fruit is 2.4

To find how many cups of the smoothie mixture should be fruit when 4 cups of smoothie are to be made, we can use proportions.

Let's call the number of cups of fruit needed x.

So, we have

x = percentage of fruit * number of cups

Substitute the known values in the above equation, so, we have the following representation

x = 60% * 4

Evaluate

x = 2.4

Hence, 2.4 cups of the smoothie mixture should be fruit to make 4 cups of smoothie with a 60% fruit and 40% water ratio.

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Five number summary consist of b. First quartile, a. Standard deviation, c. Minimum value, e. Maximum value i Mode, h. Variance, f. Third quartile, j. Mean, g. interquartile range, d. median.

If the data are graphed symmetrically, the distribution demonstrates 0% skewness regardless of how long or fat the tails are. When the median of a data set is utilized, 50% of the data points in the collection have values lower than or equal to the median, and 50% of them have values greater than or equal to the median. The middle score in the set is known as the median. The first step in calculating the median is to order the data points from smallest to greatest. The median in an odd-numbered set will be the value that falls exactly in the middle of the list. You must determine the average of the two middle numbers in a set of even numbers. The average is determined by summing up each value individually and dividing that sum by the total number of observations.

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