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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 = 50 and σ = 12, find the X value corresponding to each of the following z-scores:

a. z = –0.25    b. z = 2.00    c. z = 0.50

(a)

To determine

To Find: The X value for z=0.25.

Explanation

Given Info:

The population has mean μ=50 and standard deviation σ=12.

The z-score is 1.50.

Calculation:

The X value corresponding to z=0.25 can be obtained as follows:

The formula for specified value of X is,

X=μ+z×σ

Substitute μ=50, σ=12

(b)

To determine

To Find: The X value for z=2.00.

(c)

To determine

To Find: The X value for z=0.50.

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