Aplia, 1 term Printed Access Card for Gravetter/Wallnau's Essentials of Statistics for the Behavioral Sciences, 8th
Aplia, 1 term Printed Access Card for Gravetter/Wallnau's Essentials of Statistics for the Behavioral Sciences, 8th
8th Edition
ISBN: 9781285079707
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 11, Problem 20P

A researcher uses a matched-subjects design to investigate whether single people with pets are happier than singles without pets. A mood inventory survey is given to a group of 20- to 29-year-old non-pet owners and a similar age group of pet owners. The pet owners are matched one to one with the non-pet owners for income, number of close friendships, and general health. The data follow:

  Chapter 11, Problem 20P, A researcher uses a matched-subjects design to investigate whether single people with pets are

a. Is there a significant difference in the mood scores for non-pet owners versus pet owners? Test with α = .05 for two tails.

  b Construct the 95% confidence interval to estimate the size of the mean difference in mood between the population of pet owners and the population of non-per owners, (You should find that a mean difference of μ D = 0 is an acceptable value, which is consistent with the conclusion from the hypothesis test.)

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Aplia, 1 term Printed Access Card for Gravetter/Wallnau's Essentials of Statistics for the Behavioral Sciences, 8th

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