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14 Dec 2021
Given information
Researchers conducted a study to find out if there is a difference in the use of eReaders by different age groups. Randomly selected participants were divided into two age groups. In the 
to 
year-old group, 
of the 
surveyed use eReaders, while 
of the 
participants 
years old and older use eReaders.
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 eReader users 
years old to 
years old.
for the proportion of eReader users yers old or more.
The null hypothesis can be stated as follows:
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
Solutions
Chapter
Section
- Problem 78
- Problem 79
- Problem 80
- Problem 81
- Problem 82
- Problem 83
- Problem 84
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- Problem 91
- Problem 92
- Problem 93
- Problem 94
- Problem 95
- Problem 96
- Problem 97
- Problem 98
- Problem 99
- Problem 100
- Problem 101
- Problem 102
- Problem 103
- Problem 104
- Problem 105
- Problem 106
- Problem 107
- Problem 108
- Problem 109
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- Problem 111
- Problem 112
- Problem 113
- Problem 114
- Problem 115
- Problem 116
- Problem 117
- Problem 118
- Problem 119
- Problem 120
- Problem 121
- Problem 122
- Problem 123