The life expectancy of point-of-sale pos terminals is

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Reference no: EM13628436

The life expectancy of point-of-sale (POS) 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?

Reference no: EM13628436

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