Chapter 7.5, Problem 2LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

A population forms a normal shaped distribution with μ = 40 and σ = 8.

**a.**A sample of*n =*16 scores from this population has a mean of*M*= 36. Would you describe this as a relatively typical sample, or is the sample mean an extreme value? Explain your answer.**b.**If the sample from part a had*n*= 4 scores, would it be considered typical or extreme?

**(a)**

To determine

**To find:** The z-score is extreme value or typical

Explanation

**Given info:**

The population has mean of
*M* is 36.

**Calculation:**

*Standard error:*

*z- score:*

Where,

**(b)**

To determine

**To find:** The z-score is extreme value or extreme.

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