Question: 10.153 A consumer group compared the reliability of two comparable microcomputers from two different manufacturers. The proportion requiring service within the first year after purchase

10.153 A consumer group compared the reliability of two comparable microcomputers from two different manufacturers. The proportion requiring service within the first year after purchase was determined for samples from each of two manufacturers.

Manufacturer Sample Size Proportion Needing Service 1 75 0.15 2 75 0.09 Find a 0.95 confidence interval for p1 p2.

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