Question: (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

(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.

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

Waking times (in minutes past 5:00 A.M.) 95 110 135 145 95 140 135 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 45 135 115 75 130

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