   Chapter 11, Problem 12P 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.

To determine

There is a significant difference in the ratings for two types of advertisements.

Explanation

Given info:

Numbers of participants in the sample are n=25 .

Sample mean difference MD=1.32 .

Sum of squares is SS=150 .

Level of significance for two tailed test is α=0.05 .

Calculation:

State the hypotheses:

Null Hypothesis:

H0:μD=0

That is, there is no significant difference in the masculine words advertisement and advertisements.

Alternate Hypothesis:

H1:μD0

That is, there is a significant difference in the ratings for two types of advertisements.

In repeated-measures study, t statistic under null hypothesis is given by:

t=MDμDSS(n1)×n=1

b.

To determine

r2 to measure the size of the treatment effect.

c.

To determine

To Describe: The outcome of the hypothesis test and the measure of the effect size.

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