   Chapter 8.5, Problem 2LC 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. = 45 and σ = 8. A treatment is administered to the sample and. after treatment, the sample mean is found to be M = 47. Compute Cohen’s d to measure the size of the treatment effect.

To determine

To find: The Cohen’s d.

Explanation

Given info:

The population mean μ=45,standard deviation σ=8 and sample mean, M=47

Calculation:

The Cohen’s d may be obtained as,

Cohen'

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