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Textbook Expert
Textbook ExpertVerified Tutor
12 Nov 2021

Given information

The sample size is 100. The sample mean and sample standard deviation is 23.6 and 7 hours respectively. The population is normally distributed.

Step-by-step explanation

Step 1.

The formula for the error bound is:

 

The error bound is directly related to the ratio of the critical z value and the square root of the sample size, given that the standard deviation remains constant.

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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