   Chapter 8.5, Problem 3LC Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Solutions

Chapter
Section Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A researcher selects a sample from a population with µ = 70 and σ = 12. After administering a treatment to the individuals in the sample, the researcher computes Cohen’s d = 0.25. What is the mean for the sample?

To determine

To find: The sample mean.

Explanation

Given info:

The population mean μ=70, standard deviation σ=12, Cohen’s d=0.25

Calculation:

The formula for Cohen’s d is,

Cohen'sd=mean difference (μtreatmentμno treatment)σCohen'sd=mean difference&#

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