The life expectancy of computer terminals is normally, Ask an Expert

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The life expectancy of computer terminals is normally distributed with a mean of 4 years and a standard deviation of 10 months.

a. What is the probability that a randomly selected terminal will last more than 5 years?
b. What percentage of terminals will last between 5 and 6 years?
c. What percentage of terminals will last less than 4 years?
d. What percentage of terminals will last between 2.5 and 4.5 years?
e. If the manufacturer guarantees the terminals for 3 years (and will replace them if they malfunction), what percentage of terminals will be replaced?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9114661

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