The General Manager of the Service Department of a Television

Short Answer

The general manager of the Service Department of a television company has estimated that the time that elapses between the dates of purchase and the dates on which the 19-inch sets manufactured by the company first require service is normally distributed with a mean of 22 mo and a standard deviation of 4 months. If the company gives a 1-year warranty on parts and labor for these sets, determine the percentage of sets manufactured and sold by the company that may require service before the warranty period runs out.
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Round your answer to the nearest hundredth, if necessary.
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__________ %