What is 646.63 meters to centimeters

1 answer:

8 0

Answer: 64,663 cm

explanation: so there are 100 cm in a meter so to get from meters to cm you have to multiply by 100

when multiplying by 100 you move the decimal point two places to the right so then you go from 646.63 to 64663. :)

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Vertical, Complementary and Linear Pair Angles help me please

Mariana [72]

I saw this same type of question and page but with different numbers just 5 minutes ago...

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What is the exact circumference of the circle?

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For this case, we have that by definition, the circumference of a circle is given by:

$C = \pi * d$

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3 years ago

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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

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

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