(Answered) 1 the mean television viewing time for americans is 15

Statistics

1. The mean television viewing time for Americans is 15 hours per week (Money, November2003). Suppose a sample of 60 Americans is taken to further investigate viewing habits.Assume the population standard deviation for weekly viewing time is s 4 hours.

a. What is the probability the sample mean will be within 1 hour of the population mean?

b. What is the probability the sample mean will be within 45 minutes of the populationmean?

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