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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A score that is 6 points below the mean corresponds to a z-score of z = –2.00. What is the population standard deviation?

To determine

To find: The population standard deviation.

Explanation

Given Info:

The score is 6 points below the mean corresponds to a z score as 2.

That is, X = 6 and μ=0

Calculation:

Use the formula for z score to find the population standard deviation is,

z=Xμσσ=Xμz

Substitute the value x

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