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How do you construct a 95% confidence interval?
You work for a consumer advocate agency and want to find the mean repair cost of a washing machine. As part of your study, you randomly select 40 repair costs and find the mean to be $100. The sample standard deviation if $17.50. How do you construct a 95% confidence interval for the population mean repair cost?

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JCLv4
12 Mar 2021
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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

How to construct a 95% confidence interval if the sample mean is 100, the population standard deviation is 17.5 and the size of the sample is 40?

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