Stats: Modeling the World Nasta Edition Grades 9-12
Stats: Modeling the World Nasta Edition Grades 9-12
3rd Edition
ISBN: 9780131359581
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
Publisher: PEARSON
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Chapter 25, Problem 26E
To determine

To explain is there evidence that the sexual images mattered.

Expert Solution & Answer
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Answer to Problem 26E

There is no sufficient evidence to support the claim that the sexual images mattered.

Explanation of Solution

The table of the advertisement remembered by the ways the images are shown is given in the question. It is also given that,

  n=39

And we will find the difference between the two samples as:

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 25, Problem 26E

Now, the sample mean and the standard deviation of the difference are as follows:

  d¯=01+....1+139=0.2308sd=(00.2308)2+(10.2308)2+....+(10.2308)2+(10.2308)2391=1.6774

Let us now define the hypotheses as:

  H0:μd=0Ha:μd0

Now the degree of freedom is then as:

  df=n1=391=38>35

Thus, the value of the test statistics is then as:

  t=d¯sd/n=0.23081.6774/39=0.859

Thus, the P-value can be calculated using table T of appendix F as:

  P>0.20

As we know that the P-value is less than the significance level then the null hypothesis is rejected. Thus, we have,

  P>0.05Fail to Reject H0

Thus, we conclude that there is no sufficient evidence to support the claim that the sexual images mattered.

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