Solve the problem.If the life, in years, of a television set is normally distributed with a mean of 41 years and a standard deviation of 7 years, what should be the guarantee period if the company wants less than 3% of the television sets to fail while under warranty?
A. Less than 27.84 years
B. Less than 21.75 years
C. Less than 54.16 years
D. More than 27.84 years
Answer: A
Mathematics
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