2 years ago

Please help me!!!!!!!!!!!

Mathematics

1 answer:

lbvjy [14]2 years ago

6 0

Answer:I think its C but im not sure

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A 4 x 3w B 5 - 4r C 8 ÷÷ 4p D 4 ÷÷ 2y

Dovator [93]

Answer:

ok?

Step-by-step explanation:

7 0

3 years ago

A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?

VladimirAG [237]

Answer:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

Step-by-step explanation:

For this case we know the population deviation given by:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

4 0

2 years ago

Dana is 25 years old. She has $12,000 in a savings account, $800 in government bonds, $11,000 in a retirement account, and owns

Anastaziya [24]

Answer: APEX --- $12,800

Step-by-step explanation:

8 0

3 years ago

9263/88 and what is the remainder

WITCHER [35]

The remainder is 23.
105 R23

5 0

2 years ago

Read 2 more answers

2. Mulligan Mall has a square-shaped ice-skating rink as shown below. In the middle of the ice-skating rink there is a snack bar

gladu [14]

Answer:

2167 meters squared

Step-by-step explanation:

First find the area of the square ice skating rink: 47^2 = 2209.

Then, find the area of the triangle without ice by using 1/2bh: (12/2)(7)=42.

Simply subtract the triangle's area from the squares for the final answer of 2167 meters squared.

8 0

2 years ago

Read 2 more answers