please help with finding the answer

The mean of the sampling distribution is related to the mean of the population, the standard deviation of the sampling distribution is related to the standard deviation of the population and the shape of the sampling distribution is affected by the sample size.

a. The mean of the sampling distribution is related to the mean of the population. The mean of the sampling distribution is an estimate of the population mean and is usually denoted by x⁻. The mean of the sampling distribution is expected to be close to the population mean, as the sample size increases. However, if the sample size is small, there will be more variation in the sample means and the sample mean will not be an accurate estimate of the population mean.

b. The standard deviation of the sampling distribution is related to the standard deviation of the population. The standard deviation of the sampling distribution is an estimate of the population standard deviation and is usually denoted by s. The standard deviation of the sampling distribution is expected to be smaller than the population standard deviation, as the sample size increases. The standard deviation of the sampling distribution is also affected by the sample size, it decreases as sample size increases.

c. The shape of the sampling distribution is affected by the sample size. As the sample size increases, the shape of the sampling distribution becomes more normal and less skewed, regardless of the shape of the population. The larger the sample size, the less spread in the sample means and more likely that the sample mean will be close to the population mean.

To know more on sampling distribution

https://brainly.com/question/29375938

#SPJ4

Answer:

The 90% confidence interval for the proportion of blocks that are sufficiently strong is (0.849, 1).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the zscore that has a pvalue of \(1 - \frac{\alpha}{2}\).

Twenty six of the 28 blocks were sufficiently strong.

This means that \(n = 28, \pi = \frac{26}{28} = 0.929\)

90% confidence level

So \(\alpha = 0.1\), z is the value of Z that has a pvalue of \(1 - \frac{0.1}{2} = 0.95\), so \(Z = 1.645\).

The lower limit of this interval is:

\(\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.929 - 1.645\sqrt{\frac{0.929*0.071}{28}} = 0.849\)

The upper limit of this interval is:

\(\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.929 + 1.645\sqrt{\frac{0.929*0.071}{28}} = 1.009\)

Since a proportion cannot be above 1, the upper limit is 1.

The 90% confidence interval for the proportion of blocks that are sufficiently strong is (0.849, 1).

Answer:

3.34.

Step-by-step explanation:

4.2 * 0.2 + 2.5

= 0.84 + 2.5

= 3.34.

Answer:

3.34

Step-by-step explanation:

the product is 4.2×0.2=0.84

add is 2.5 + 0.84=3.34

The project is considered to be complete when the EV is equal to the AC. So option b is correct.

When a project is considered complete, it means that the total amount of work that was planned to be done (referred to as the Budget at Completion or BAC) has actually been completed and the amount spent on completing the work so far EV is equal to the BAC.

In project management, Earned Value (EV) and Actual Cost (AC) are two key measurements used to quantify the exhibition of a project.

Earned Value (EV) addresses the arranged value of the work that has been finished. It is calculated by multiplying the arranged completion rate by the Budget at Completion (BAC).

Actual Cost (AC) addresses the actual measure of cash spent on the project in a limited way of time. It is the amount of the multitude of costs caused for the finished work and the work underway.

At the point when the Earned Value (EV) is equivalent to the Actual Cost (AC), it implies that all the arranged work has been finished and all the budget has been spent.

This is a decent indication that the project is on target and is probably going to be finished within the arranged budget.

Thus, when the Earned Value (EV) is equivalent to the Actual Cost (AC), the project is thought of as complete.

To learn more about project management:

https://brainly.com/question/16927451

#SPJ4

Answer:

115-2*180

= 245

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

there are 2 triangles so the angles in all add up to 360. (108*2) then you subtract all the known angles.

El supplemento y el complemento de cada ángulo son, respectivamente:

Caso A: m ∠ A' = 43°

Caso B: m ∠ A' = 31°

De acuerdo con la geometría, la suma de un ángulo y su complemento es igual a 90° and la suma de un ángulo y su suplemento es igual a 180°. Matemáticamente hablando, cada situación es descrita por las siguientes formulas:

Ángulo y su complemento

m ∠ A + m ∠ A' = 90°

Ángulo y su suplemento

m ∠ A + m ∠ A' = 90°

Donde:

Ahora procedemos a determinar cada ángulo faltante:

Caso A: Complemento

47° + m ∠ A' = 90°

m ∠ A' = 43°

Caso B: Suplemento

149° + m ∠ A' = 180°

m ∠ A' = 31°

El enunciado se encuentra escrito en español y la respuesta está escrita en el mismo idioma.

The statement is written in Spanish and its answer is written in the same language.

Para aprender más sobre ángulos complementarios y suplementarios: https://brainly.com/question/4410854

#SPJ1

Step-by-step explanation:

Improper fractions have a numerator that is larger than the denominator

1 = 6/6

 so  1  1/6  = 7/6

You are already correct.

The logarithm expression can be simplified to:

In(6x^9)-In(x^2) =7·ln(6x)

There are some logarithm properties we can use here.

log(a) - log(b) = log(a/b)

log(a^n) = n*log(a)

(these obviously also apply to the natural logarithm)

Now let's look at our expression, it says that:

In(6x^9)-In(x^2)

Using the first rule, we can rewrite this as.

In(6x^9)-In(x^2) = ln(6x^9/x^2)

Now solving the quotient in the argument:

ln(6x^9/x^2) = ln(6x^7) = 7·ln(6x)

That is the expresison simplified.

Learn more about logarithms at:

https://brainly.com/question/13473114

#SPJ1

The width of the image which was photocopied by Jackie and has an initial length of 6 inches and width of 4 inches is 6 inches.

An area is a unit of measurement used to describe the size of a region on a planar or curved surface. While a plane region or area refers to the area of a shape or planar lamina, a surface region or plane area refers to the area of an open surface or the boundary of a three-dimensional object.

Given:

The initial length of the image, l = 6 inches,

The initial width of the image, w = 4 inches,

The reduced length of the image, L = 4 inches,

The area of the initial image = The area of the reduced image,

l × w = L × W

Here W is the reduced width.

Substitute the values,

6 × 4 = 4 × W

W = 6 inches,

Therefore, the width of the image which was photocopied by Jackie and has an initial length of 6 inches and width of 4 inches is 6 inches.

To know more about Area:

brainly.com/question/27683633

#SPJ1

Step-by-step explanation:

14 mm³ because the radius is this

9514 1404 393

Answer:

  4 values

Step-by-step explanation:

Draw a horizontal line at y = -4. Count how many places it crosses the graph.

There are 4 values of x where f(x) = -4.

a. The stand form is f(x) = x^3 - 13x - 12

degree = 3

constant term = - 12

b. The stand form is g(x) = 3 x^3 - 39x - 36

degree = 3

constant term = - 36

Given data

f(x) = (x + 1)(x+3)(x-4)

g(x) = 3(x + 1)(x+3)(x-4)

for f(x) = (x + 1)(x+3)(x-4) we have

f(x) = (x + 1)(x+3)(x-4)

f(x) = ( x + 1 ) ( x^2 - 4x + 3x - 12 )

f(x) = (x + 1) ( x^2 - x - 12 )

f(x) =  x^3 - x^2  - 12x +  x^2 - x - 12

f(x) = x^3 - 13x - 12

degree = 3

constant term = -12

g(x) = 3(x + 1)(x+3)(x-4)

g(x) = 3(x + 1) ( x^2 - 4x + 3x - 12 )

g(x) = 3(x + 1) ( x^2 - x - 12 )

g(x) = 3 (  x^3 - x^2  - 12x +  x^2 - x - 12 )

g(x) = 3 ( x^3 - 13x - 12 )

g(x) = 3 x^3 - 39x - 36

degree = 3

constant term = - 36

Read more on polynomials here: https://brainly.com/question/2833285

#SPJ1

Answer:

  C.  KL = 10.14

Step-by-step explanation:

You want the length of segment KL in ∆JKL given it is similar to ∆XYZ with lengths JK=11.31, XY=8.7, YZ=7.8.

Corresponding sides of similar triangles are proportional. It can be useful to identify corresponding sides and their given measures:

  JK = 11.31, XY = 8.7

  KL = ?, YZ = 7.8

This lets us write the proportion ...

  KL/JK = YZ/XY

  KL/11.31 = 7.8/8.7 . . . . . . . . . . use given values

  KL = 11.31(7.8/8.7) = 10.14 . . . multiply by 11.31

The measurement of KL is 10.14 untis.

__

Additional comment

You have to go by the sequence of vertices in the similarity statement, not the appearance of the figure. One triangle is rotated from the other in the figure, so that parallel sides are not corresponding sides.

<95141404393>

Answer:

...... .................

Answer:

1.) What is the difference between the proportion of women with high blood pressure who use oral contraceptive and those who don't?

2.) P1 - P2

3.)

Let P` = population statistic

P1` - P2`

Step-by-step explanation:

Since the experiment is to know if there is a difference between high blood pressure in women who use oral contraceptives or not ; the we can frame the research question thus :

What is the difference between the proportion of women with high blood pressure who use oral contraceptive and those who don't?

2.) P1 - P2

P1 = All women who have high blood pressure and use oral contraceptive

P2 = All women who high blood pressure who don't use oral contraceptive

3.)

P1` - P2` ; (0.15 - 0.10)

P1` = women in the sample (900) who have high blood pressure and use oral contraceptive

P2` = women in the sample (900) who high blood pressure who don't use oral contraceptive

-3.6

Step-by-step explanation:

z/(-2) + -5 = -3.2 → times -2

z + 10 = 6.4

z = 6.4 - 10

z = -3.6

FALSE

Graph of inequality involves shading one of the side of a boundary which mainly involves dividing coordinates into two planes.

The inequality signs are the <, >, ≤ or ≥. If the inequality sign is a “≤” or “≥”, then the graph will represent a closed half-plane whereas if the inequality of a graph is < or >, the graph will represent an open half-plane.

Based on the explanation above, we can conclude that the statement that the graph of inequality with < or > is a closed half-plane is FALSE

Answer: D) 7 3/4

Step-by-step explanation:

With averages, we add all the values and divide by the number of values. Here, we know three out of the four days, let's label the day we don't know x. There are four days, so we can divide by four. 7 1/4 is the average, so we can set the equation equal to 7 1/4.

7 1/4 = (7 1/2 + 7 3/8 + 6 3/8 + x) / 4

Let's multiply both sides by 4 to get rid of the fraction. Let's also add what is in the parentheses

29 = 21 1/4 + x

Now we can isolate x by subtracting 29-21 1/4

so

x = 7 3/4 thus the answer is D

Answer:

D) 7 3/4

Step-by-step explanation:

Let x = amount of last feeding.

7 1/4 = (7 1/2 + 7 3/8 + 6 3/8 + x)/4

4 × 7 1/4 = 7 1/2 + 7 3/8 + 6 3/8 + x

28 + 1 = 7 4/8 + 7 3/8 + 6 3/8 + x

29 = 20 10/8 + x

(20 10/8 is the same as 20 + 10/8 = 20 + 8/8 + 2/8 = 20 + 1 + 1/4 = 21 + 1/4 = 21 1/4)

29 = 21 2/8 + x

29 = 21 1/4 + x

x = 29 - 21 1/4

x = 28 4/4 - 21 1/4

x = 7 3/4

Answer: 7 3/4

Using equations, the time for the main engine 14.4 seconds and 21.6 seconds for the auxiliary engine

Let's call the time each engine takes to consume its allotted fuel supply as "t₁" for the main engine and "t₂" for the auxiliary engine.

From the first piece of information, we know:

t₁ = (2/3)t₂

From the second piece of information, we know that the combined fuel consumption time for both engines is 36 seconds:

t₁ + t₂ = 36

Now we can substitute the first equation into the second:

t₁ + (2/3)t₂ = 36

Combining like terms:

t₂ = 21.6

Finally, substituting t₂ back into the first equation:

t₁ = (2/3)(21.6) = 14.4

So the main engine alone could be fired for 14.4 seconds and the auxiliary engine alone could be fired for 21.6 seconds.

Learn more on equations here;

https://brainly.com/question/18831322

#SPJ1

The 7th number in the pattern, where each number starts with 2 and is then multiplied by 4, is 8192.

In the given pattern, where each number starts with 2 and is then multiplied by 4, we can calculate the 7th number as follows:

Starting with 2, we multiply each subsequent number by 4:

1st number: 2

2nd number: \(2 \times 4 = 8\)

3rd number: \(8 \times 4 = 32\)

4th number:\(32 \times 4 = 128\)

5th number:\(128 \times 4 = 512\)

6th number: \(512 \times 4 = 2048\)

7th number: \(2048 \times 4 = 8192\)

Therefore, the 7th number in the pattern is 8192.

For similar question on pattern.

https://brainly.com/question/27033681

#SPJ11

Question: Consider a pattern where each number starts with 2 and is then multiplied by 4.

What is the 7th number in this pattern?

Answer:

45 minutes

Step-by-step explanation:

60 minutes in one hour divided by four will give us 1/4

60/4=15

15*3= 45

45=3/4 of an hour

Answer:

17

Step-by-step explanation:

(60b divided by 5) + c

(60(1/2) divided by 5) + 11

(30 divided by 5) + 11

6 + 11

17

Answer:

None are correct.

Step-by-step explanation:

10/30 wanted pepperoni, so 1/3 of them wanted pepperoni.

15/30 wanted cheese, so 1/2 wanted cheese.

5/30 wanted hamburgers, so 1/6 wanted hamburgers.

You can use this information to estimate the number of the 150 students who wanted each.

1/3 of 150 = an estimated 50 wants pepperoni

1/2 of 150 = an estimated 75 wants cheese

1/6 of 150 = an estimated 25 wants hamburgers

Now you can use this to see which one is true.

A. There are 40 students who want pepperoni

not true, there are 50

B. There are 100 students who want either pepperoni or hamburger

50(pepperoni) + 25(hamburger) = 75, so this is not true

C. There are 10 more students who will want cheese than hamburger

75(cheese) - 25 (hamburger) = 50, so this is not true.

D. There are 5 more students would want pepperoni than hamburger

50 (pepperoni) - 25 (hamburger) = 25, so this is not true

None of these answers are correct

Answer:

1. x = 30

REC = 130

Step-by-step explanation:

2x + 70 = 4x + 10

60 = 2x

x = 30

you try the others

Good luck :D

By using Pythagoras theorem we get the height of the roof of dog house is 21 inches.

The Pythagoras theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. 

This theorem is named after the Greek philosopher Pythagoras, who lived around 570 BC. born. 

According to the question:

Given, Hypotenuse(h) = 29 inches

           Base(b) = 40/2 = 20 inches

Using Pythagoras theorem, we get

h² = b² + p²

⇒ 29² = 20² + p²

⇒ p² = 29² - 20²

⇒ p² = 841 - 400

⇒ p² = 441

⇒ p = √441

⇒ p = 21

∴ The height of the roof of dog house is 21 inches.

To learn more about Pythagoras theorem, visit the link below

https://brainly.com/question/343682

#SPJ1

The answer to this question: B

Answer:

5x+7 > 17 matches with 3.

1+3x > -5 matches with 2.

2x+1 < 3 matches with 1.

5-3x > 11 matches with 4.

Step-by-step explanation: