Chapter 4, Problem 6P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

A population has a mean of µ = 80 and a standard deviation of σ = 20.

**a.**Would a score of*X*= 70 be considered an extreme value (out in the tail) in this sample?**b.**If the standard deviation were σ = 5, would a score of*X*= 70 be considered an extreme value?

**a.**

To determine

**To check:** Whether the score of

Explanation

**Given info:**

The population has a mean of

The score is

**Calculation:**

In a normal distribution with mean

Substitute the value for

**b.**

To determine

**To check:** Whether the score of

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