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Essentials of Statistics for The B...

9th Edition
Frederick J Gravetter + 2 others
ISBN: 9781337098120

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Section
BuyFindarrow_forward

Essentials of Statistics for The B...

9th Edition
Frederick J Gravetter + 2 others
ISBN: 9781337098120
Textbook Problem

A sample has a mean of M =60 and a standard devia­tion of s = 7. For this sample, find the z-score for each of the following X values.

X = 69        X = 72        X = 63

X = 54        X = 49        X = 52

To determine

To Find: The z score corresponding to X.

Explanation

Given Info:

The sample has mean M=60 and standard deviation s=7.

Calculation:

The formula for z score is,

z=XMs

The z score corresponding to X=69 is,

z=XMs=69607=1.29

The z score corresponding to X=72 is,

z=XMs=72607=1.71

The z score corresponding to X=63 is,

z=XMs=63607=0

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