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14 Dec 2021
Problem 109
Page 564
Section: HOMEWORK
Chapter 10: HYPOTHESIS TESTING WITH TWO SAMPLE
Textbook ExpertVerified Tutor
14 Dec 2021
Given information
A group of friends debated whether more men use smartphones than women. They consulted a research study of smartphone use among adults. The results of the survey indicate that of the 
men randomly sampled, 
use smartphones. For women, 
of the 
who were randomly sampled use smartphones. Test at the 
level of significance.
Step-by-step explanation
Step 1.
The hypothesis testing in the required format as given in the problem is as follows:
The subscripts are:
for the proportion of men who use a smartphone.
for the proportion of women who use a smartphone.
The null hypothesis can be stated as follows:
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
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