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The average number of hours of TV viewing per household per week in Australia is 49 hours. Suppose the standard deviation is 22 hours and

The average number of hours of TV viewing per household per week in Australia is 49 hours. Suppose the standard deviation is 22 hours and a random sample of 34 Australian households is taken, what is the probability that the sample average is less than 56 hours?

a.

0.9282

b.

0.9982

c.

0.8682

d.

0.9682

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