Chapter 11, Problem 12P

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

Masculine-themed words (such us competitive, independent, analyze, strong) are commonly used in job recruitment materials, especially for job advertisements in male-dominated areas (Gaucher, Friesen, & Kay, 2010). The same study found that these words also make the jobs less appealing to women. In a similar study, female participants were asked to read a series of job advertisements and then rate how interesting or appealing the job appeared to be. Half of the advertisements were constructed to include, several masculine-themed words and the others were worded neutrally. The average rating for each type of advertisement was obtained for each participant. For *n* – 25 participants, the mean difference between the two types of advertisements is *M _{D}* = 1.32 points (neutral ads rated higher) with

**a.** Is this result sufficient to conclude that there is a significant difference in the ratings for two types of advertisements? Use a two-tailed test with α = .05.

**b.** Compute *r*^{2} to measure the size of the treatment effect.

**c.** Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.

**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

Sample mean difference

Sum of squares is

Level of significance for two tailed test is

**Calculation:**

State the hypotheses:

*Null Hypothesis:*

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

*Alternate Hypothesis:*

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:

**b.**

To determine

**c.**

To determine

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

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