SOLUTION: The lifetime of a color television is normally distributed with a mean of 7.8 years and a standard deviation of 3 years. What is the probability that a TV will last more than 10 ye
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Question 353660: The lifetime of a color television is normally distributed with a mean of 7.8 years and a standard deviation of 3 years. What is the probability that a TV will last more than 10 years? more than 7.8 years? How long should the warranty period be (in years) if they want to replace only 1% of the TVs?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z-score.
So then
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years
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