Construct a 90% confidence interval for the population mean in Exercise 1. Interpret the results. Exercise 1

Question:

Construct a 90% confidence interval for the population mean in Exercise 1. Interpret the results.

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. Assume the population standard deviation is 45 minutes. Find

(a) The point estimate of the population mean μ and

(b) The margin of error for a 90% confidence interval.

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Elementary Statistics Picturing The World

ISBN: 9780321911216

6th Edition

Authors: Ron Larson, Betsy Farber

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Question Posted: Nov 24, 2015 07:54 AM

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Construct a 90% confidence interval for the population mean in Exercise 1. Interpret the results. Exercise 1

Question:

Waking times (in minutes past 5:00 A.M.) 135 145 95 140 135 95 110 50 90 165 110 125 80 125 130 110 25 75 65 100 60 125 115 135 95 90 140 40 75 50 130 85 100 160 135 9 45 135 115 75 130

Step by Step Answer:

a x z c n 1035 1645 45 40 1035 117 ...View the full answer

Elementary Statistics Picturing The World

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