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May 27, 2015

Homework Help: Statistics

Posted by Rebecca on Tuesday, October 30, 2007 at 4:04pm.

The mean television viewing time for Americans is 15 hours per week. Suppose a sample of 60 Americans is taken to further investigate viewing habits. Assume the population standard deviation for weekly viewing ime is o = 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 population mean?

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