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2 years ago

I cant figure nothing this out help me pleaseee

Mathematics

1 answer:

Arturiano [62]2 years ago

4 0

Answer:

Well in set A, all of the sides are the same length but they are different shapes.

In set B, all of the angles are the same, they are just differnet shapes.

Hope this helps! :)

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4)In order to set rates, an insurance company is trying to estimate the number of sick daysthat full time workers at an auto rep

bagirrra123 [75]

Answer:

A sample of 18 is required.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.92}{2} = 0.04$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.04 = 0.96$ , so Z = 1.88.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

A previous study indicated that the standard deviation was 2.2 days.

This means that $\sigma = 2.2$

How large a sample must be selected if the company wants to be 92% confident that the true mean differs from the sample mean by no more than 1 day?

This is n for which M = 1. So

$M = z\frac{\sigma}{\sqrt{n}}$

$1 = 1.88\frac{2.2}{\sqrt{n}}$

$\sqrt{n} = 1.88*2.2$

$(\sqrt{n})^2 = (1.88*2.2)^2$

$n = 17.1$

Rounding up:

A sample of 18 is required.

3 0

2 years ago

Find the ending balance $35,600 at 9% for 2 years

tino4ka555 [31]

Answer:

42,008

Step-by-step explanation:

6 0

2 years ago

maggie's brother is 3 years younger than twice her age. the sum of their ages is 24. write solve an equation to determine maggie

prohojiy [21]

Maggie =x
brother = 2x-3
x+2x-3= 24
27 /3= 3 x/3
x= 9 years

7 0

2 years ago

A dime is 1/2 inch wide if you put 5 dimes end to end, how long will they be begginning to end

Contact [7]

If you put 5 which means its 2 1/2 ( I think) Because two 1/2 makes one.

8 0

2 years ago

Read 2 more answers

Furkat [3]

Answer: A IS CORRECT

Step-by-step explanation:

6 0

2 years ago