The manager of a computer retails store is concerned that his suppliers have been giving him laptop computers with lower than average quality. His research shows that replacement times for the model Laptop of concern are normally distributed with a mean of 3.3 years and a standard deviation of 0.6 years. He then randomly selects records on 38 laptops sold in the past. Round the answers of following questions to 4 decimal places. a. What is the distribution of X? X - N( 3.3 0.6 b. What is the distribution of 7? 7 - NO 33 00973

Q: B 8 6.

A: Given :BC = rAB = 8AC = r+6

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Q: D.

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