Chapter 9, Problem 18P

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10th Edition

Frederick J Gravetter + 1 other

ISBN: 9781305504912

Textbook Problem

A random sample of

a. Assuming that the sample standard deviation is
*d *to measure the size of the treatment effect.

b. Assuming that the sample standard deviation is
*d *to measure the size of the treatment effect.

c. Comparing your answers from parts *a *and *b*, how does the variability of the scores in the sample influence the measures of effect size?

To determine

The

Explanation

**Given:**

n=16, μ = 45, M = 49.2

**Formula used:**

Cohen's d is given as:

**Calculations:**

a. s = 8 since

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