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The average number of hours of TV viewingper household per week in Australia is 53hours. Suppose the standarddeviation is 22hours anda random sample of 39Australian

The average number of hours of TV viewingper household per week in Australia is 53hours.

Suppose the standarddeviation is 22hours anda random sample of 39Australian households is taken,

What is the probability that the sample average is less than54hours

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