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Essentials of Statistics for the B...

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

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Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

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

For a population with µ = 30 and σ = 8, find the z-score for each of the following scores:

a. X = 32     b. X = 26    c. X = 42

(a)

To determine

To Find: The z-score corresponding to X=32.

Explanation

Given Info:

The population has mean μ=30 and standard deviation σ=8.

Calculation:

The z-score corresponding to X=32 can be obtained as follows:

The formula for z-score is,

z=Xμσ

Substitute μ=30, σ=8

(b)

To determine

To Find: The z-score corresponding to X=26.

(c)

To determine

To Find: The z-score corresponding to X=42.

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