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How many computers? In a simple random sample of 200 households, the sample mean number of personal computers was 2.88. Assume the population standard deviation

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How many computers? In a simple random sample of 200 households, the sample mean number of personal computers was 2.88. Assume the population standard deviation is o = 0.47. Part: 0 / 4 Part 1 of 4 2 (a) Construct a 90% confidence interval for the mean number of personal computers. Round the answer to at least two decimal places. A 90% confidence interval for the mean number of personal computers is

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