Chapter 11, Problem 5P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

A sample of *n* = 9 individuals participates in a repeated-measures study that produces a sample mean difference of *M _{D}* = 4.25 with

a. Calculate the standard deviation for the sample of difference scores. Briefly explain what is measured by the standard deviation.

b. Calculate the estimated standard error for the sample mean difference. Briefly explain what is measured by the estimated standard error.

**a.**

To determine

Standard deviation for the sample of difference scores.

**To explain:** Standard deviation for difference scores.

Explanation

**Given info:**

The study is repeated-measures study and the numbers of participants are

**Calculation:**

Sample standard deviation:

**b.**

To determine

Estimated standard error for the sample means difference.

**To explain:** Standard error for sample means difference.

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