Finding confidence interval for average number of television

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Reference no: EM1323052

Q1) Utility company serves 50,000 households. As part of survey of customer attitudes, they take simple random sample of 750 of these households. Average number of television sets in sample households turns out to be 1.86, and SD is 0.80. If possible, determine a 95% confidence interval for average number of television sets in all 50,000 households. If this is not possible, describe why not.

Q2) Out of the 750 households in survey of the previous exercise, 451 have computers. If possible, determine a 99.7% confidence interval for percentage of all 50,000 households with computers. If this is not possible, describe why not.

Reference no: EM1323052

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