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In a simple random sample of 100 households, the sample mean number of personal computers was...

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Basic Math

In a simple random sample of 100 households, the sample meannumber of personal computers was 1.32. Assume the populationstandard deviation is 0.41. Construct a 95% confidence interval forthe mean number of personal computers.

(a) (1.24, 1.40)

(b) (1.25, 1.39)

(c) (0.15, 0.67)

(d) (0.19, 0.63)

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