Assume that the life of an engine follows a normal distribution with an average life of 12 years and a standard deviation of 2 years

Assume that the life of an engine follows a normal distribution with an average life of 12 years and a standard deviation of 2 years. The seller replaces all engines that fail during the warranty period without additional charges.

a) If the manufacturer wishes to replace only 1% of the engines it sells, what is the warranty time it must offer?

b) supposes that Puerto Rico sold 30 engines, what is the percentage of probability that more than 1 customer will claim a guarantee?

c) the cost of repairing a $ 1,500 engine. How much money do you expect to spend for the engines you need to repair and are already under warranty?

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orchestra answered 1 year ago

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