(a) Construct a 90% confidence interval for the population mean in Exercise 1. Interpret the results. (b)...
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(a) Construct a 90% confidence interval for the population mean in Exercise 1. Interpret the results.
(b) Does it seem possible that the population mean could be within 10% of the sample mean? Explain.
Data from Exercise 1:
The waking times (in minutes past 5:00 a.m.) of 40 people who start work at 8:00 a.m. are shown in the table at the left. Assume the population standard deviation is 45 minutes.
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9780134683416
7th Edition
Authors: Ron Larson, Betsy Farber
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