A decision maker is interested in estimating the mean of a population based on a random sample. She wants the confidence level to be ​% and the margin of error to be . She does not know what the population standard deviation​ is, so she has selected the pilot sample below. Based on this pilot​ sample, how many more items must be sampled so that the decision maker can make the desired confidence interval​ estimate? The decision maker should sample nothing more items to make the desired confidence interval estimate.

Answer:

Length = [tex]13\ \text{ft}[/tex]

Width = [tex]7\ \text{ft}[/tex]

Step-by-step explanation:

Let

Breadth of the garden = x

According to the question length of the garden = 6+x

Fencing given for the rectangular garden = 27 ft

Perimeter of the garden is given by

[tex]6+x+x+x=27\\\Rightarrow 6+3x=27\\\Rightarrow x=\dfrac{27-6}{3}\\\Rightarrow x=7\ \text{ft}[/tex]

Here the garden's length will be along the garage so fencing will not done there. So length will be added only once in the perimiter.

The length of the garden is [tex]6+7 = 13\ \text{ft}[/tex] and the width is [tex]7\ \text{ft}[/tex].

Answer:

C

PLZ let me know if im wrong

Answer:

25233

Step-by-step explanation:

What expressions, please complete your answer!

647 × 39 = 25233

Pls consider marking my answer as Brainliest! It would mean a lot!

Answer:

D

Step-by-step explanation:

Answer:

the missing value should be 14

Step-by-step explanation:

Answer:

6 glasses

Step-by-step explanation:

3/4 = 6/8

Answer:

800, 8000

Step-by-step explanation:

8*10=80*10=800, 8*10=80*100=8000

Im not exactly sure as to what the question you are asking or what lesson this is from but I hope this helped being the closest and only way I could answer this, terribly sorry if this wasn't the correct solution

Answer:

x > 3

Step-by-step explanation:

Answer:

x > 3

Step-by-step explanation:

Step 1:

8x - 6 > 12 + 2x         Equation

Step 2:

6x - 6 > 12        Subtract 2x on both sides

Step 3:

6x > 18          Add 6 on both sides

Step 4:

x > 18 ÷ 6      Divide 6 on both sides

Answer:

x > 3

Hope This Helps :)

Answer:

It would be 13.

Answer:

(1) 0 and 1

(2) Correct option D

Step-by-step explanation:

It is provided that pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per minute.

Let X denote the pulse rates of women.

(1)

Let us consider a random variable, X that follows N (µ, σ²), then [tex]Z=\frac{X-\mu}{\sigma}[/tex], is a standard normal variate with mean, E (Z) = 0 and variance V (Z) = 1.

That is, Z follows N (0, 1).

In statistics, a standardized score is the number of standard deviations an observation or data point is from the mean.

Thus, z-scores are a type of standardized scores.

The values of the mean and standard deviation after converting all pulse rates of women to z scores are 0 and 1 respectively.

(2)

The z scores are numbers without units of measurement.

Answer:

b=4

Step-by-step explanation:

For this question we need to know the formula of slope that is m which is

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

where [tex](x_1,y_1) , (x_2,y_2)[/tex] are the points [tex](5,-8),(-1,b)[/tex] respectively

and hence we have the value of m= -2 which is the slope we simply plug in all the values.

[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\-2=\frac{b-(-8)}{-1-5} \\\\-2=\frac{b+8}{-6} \\\\12=b+8\\12-8=b\\4=b[/tex]

So the value of b=4

Answer:

b is 4

Step-by-step explanation:

Several steps are required to find this answer. You need to use the information you are given as well as the formula y=mx+b. You are given the slope and one of the coordinates. Plug the information into the formula to find b, which is the constant.

The point given is (5,-8)

The slope given is -2

Plug the x and y into y=mx+b

-8=-2(5)+b

-8=-10+b

-8+10=b

b=2

Now that you have the full equation, y=-2x+2 , you can plug in the x-coordinate of the other coordinate to find the missing y-value.

y=-2(-1)+2

y=2+2

y=4

Therefore, the b you are solving for is 4.

Answer:

I'm assuming A is -3/7 B is -0.4 and c is -1/5

Answer:

107.8

Step-by-step explanation:

Answer:

[tex]\%Change = 58.33\%[/tex]

Step-by-step explanation:

Given

[tex]Initial = 12[/tex]

[tex]Final = 19[/tex]

Required

Determine the percentage change

Percentage change is calculated as thus:

[tex]\%Change = \frac{|FInal - Initial|}{Initial} * 100\%[/tex]

[tex]\%Change = \frac{|19 - 12|}{12} * 100\%[/tex]

[tex]\%Change = \frac{|7|}{12} * 100\%[/tex]

[tex]\%Change = \frac{7}{12} * 100\%[/tex]

[tex]\%Change = \frac{7* 100\%}{12}[/tex]

[tex]\%Change = \frac{700\%}{12}[/tex]

[tex]\%Change = 58.33\%[/tex]

Answer:

0.19146

0.066807

Step-by-step explanation:

Given that :

Mean (m) = 70

Standard deviation (s) = 10

a. Find the probability that a randomly selected high school senior will have a score between 70 and 75.

X ≤ 70 :

Using : z = (x - m) / s

Z = (70 - 70) / 10

Z = 0 / 10

Z = 0

P( Z < 70) = 0.500

X ≤ 75

z = (x - m) / s

Z = (75 - 70) / 10

Z = 5 / 10

Z = 0. 5

P(z < 0.5) = 0.69146

0.69146 - 0.5000

= 0.19146

b. Find the probability that a randomly selected high school senior will have a score higher than 85.

X ≥ 85

z = (x - m) / s

Z = (85 - 70) / 10

Z = 15 / 10

Z = 1.5

P(z > 1.5) = 0.066807 ( Z probability calculator)

Answer:

-7 is less than -2 is less than 3 is equal to 3 is equal to 3 is equal to 3 is equal to 3 is less than 6 is less than 7

Step-by-step explanation:

Answer:

64.25

Step-by-step explanation:

Subtract 209.5-145.25=64.25

Answer:

64.25

Step-by-step explanation:

145.25 - 209.5 = -64.25, then you find the absolute value

Answer:

diameter will be 18

and radiuse will be half of 18

Step-by-step explanation:

Answer:

Usually n stands for a (positive) integer. The exclamation point used after an integer usually means “factorial.”

Step-by-step explanation:

Answer:

Clarence is 5 inches taller.

42-37=5

Answer:

Clarence is 5 inches taller.

Step-by-step explanation:

You are using subtraction by doing 42-37

42-37 cross out the 4 to be a 3, make the 2 a 12 and subtract 12-7=5

3-3 is 0 so it would be 5.

Answer:

The probability that the shopping time will be between 25 and 30 minutes is 0.25.

Step-by-step explanation:

The question is:

What is the probability that the shopping time will be between 25 and 30 minutes?

Solution:

Let X represent the time spent shopping at a supermarket for a basket with 20 specific items.

It is provided that X follows Uniform (20, 40).

Compute the probability that the shopping time will be between 25 and 30 minutes as follows:

[tex]P(25<X<30)=\int\limits^{30}_{25} {\frac{1}{40-20}} \, dx[/tex]

                         [tex]=\int\limits^{30}_{25} {\frac{1}{20}} \, dx \\\\=\frac{1}{20}\times [x]^{30}_{25}\\\\=\frac{30-25}{20}\\\\=0.25[/tex]

Thus, the probability that the shopping time will be between 25 and 30 minutes is 0.25.

Answer:

45

Step-by-step explanation:

just add them but why is there a I

Answer:

41+5i

Step-by-step explanation:

Combine like terms; 9+11+21.

1. 12

2. 28

3. 44

This is because when you multiply 4. It also increases the number when you multiply 7.

Answer:

Multiply the first numbers by three and then keep multiplying :)

Step-by-step explanation:

Answer:

The second length of the piece because 141 times 2 which is two times the amount of the second piece is 282.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The answer is 47.

The answer to this is -4