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dusya [7]
3 years ago
6

The logo for a new company is a circle divided into 24 equally sized sectors. Six of the sectors are white, and the others are d

ifferent colors.
The area of one of the white sectors is 13π/50 inches squared.

What is the radius of the circle? Enter your answer rounded to the nearest hundredth.
Mathematics
1 answer:
AveGali [126]3 years ago
8 0

Answer:

r = 2.5

Step-by-step explanation:

the area of the whole circle = \frac{13}{50}*π * 24

A = πr² = (13π*24)/50

r = √((13*24)/50) = 2.5 inches

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Answer:

8

Explanation:

8 - Ten-Thousands

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Answer:

C) The confidence interval is not biased.

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A sample of 13 sheets of cardstock is randomly selected and the following thicknesses are measured in millimeters. Give a point
valina [46]
<h3>Answer:  0.061</h3>

===============================================

Explanation:

Add up the values to get

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Then divide over 13 (the number of values) to get 24.54/13 = 1.8876923 which is approximate.

So the mean is approximately 1.8876923

---------------------

Now make a spreadsheet as shown below

We have the first column as the x values, which are the original numbers your teacher provided. The second column is of the form (x-M)^2, where M is the mean we computed earlier. We subtract off the mean and square the result.

After we compute that column of (x-M)^2 values, we add them up to get what is shown in the highlighted yellow cell at the bottom of the column.

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Next, we divide that over n-1 = 13-1 = 12

0.04403076924 /12 = 0.00366923077

That is the sample variance. Apply the square root to this to get the sample standard deviation. This is the point estimate of the population standard deviation. As the name implies, it works for samples that estimate population parameters.

sqrt(0.00366923077) = 0.06057417576822

This rounds to 0.061 which is the final answer.

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Answer:

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