   Chapter 12, Problem 8P 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

The following data summarize the results from an independent-measures study comparing three treatment conditions. a. Calculate the sample variance for each of the three samples.b. Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means.

a.

To determine

To find: The sample variance for each of the three samples.

Explanation

Given info:

The data values and details are provided in the question.

 Treatment 1 Treatment 2 Treatment 3 N=12G=48∑X2=238 n=4 n=4 n=4 M=4 M=2 M=6 T=16 T=8 T=24 SS=2 SS=4 SS=8

Calculations:

The formula for sample variances is

s2=SSn1

For treatment 1:

s12=SS1n11 <

b.

To determine

To find: Whether there are any significant differences among the three treatments means using ANOVA with α=0.05

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