The life span of a calculator manufactured by the Intel Corporation has a normal distribution with a mean of 54 months and a standard deviation of 8 months. The company guarantees that any calculator that starts malfunctioning within 36 months of the purchase will be replaced by a new one. What is the probability that a randomly selected calculator will be replaced by a new one?

asked by Scarlett Garcia

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http://davidmlane.com/hyperstat/z_table.html

answered by Damon

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The life span of a calculator manufactured by the Intel Corporation has a normal distribution with a mean of 54 months and a standard deviation of 8 months. The company guarantees that any calculator that starts malfunctioning within 36 months of the purchase will be replaced by a new one. What is the probability that a randomly selected calculator will be replaced by a new one?

1 answer

http://davidmlane.com/hyperstat/z_table.html

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Damon · Answer

http://davidmlane.com/hyperstat/z_table.html