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QUESTION 12 14 poir An extensive survey in 1970 revealed preschool children spend an average of 6.3 hours per day watching television. The distribution of

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QUESTION 12 14 poir An extensive survey in 1970 revealed preschool children spend an average of 6.3 hours per day watching television. The distribution of TV times in normal with a population standard deviation of 2 hours. Last year a sample of 100 preschool children had a mean of 5.8 hours of TV watching per day. Test to determine if the average time preschool children spend watching TV per day has decreased at the 0.01 significance level. Part A - Ho: U = 6.3 Part B - Ha: H

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