How many computers? In a simple random sample of 140 households, the sample mean number of personal computers was 2.6. Assume the popul standard deviation is o = 0.98. Part: 0/ 4 Part 1 of 4 (a) Construct a 98% confidence interval for the mean number of personal computers. Round the answer to at least two decimal places. A 98% confidence interval for the mean number of personal computers is

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