Life Expectancy of Clothing If the average life of a certain make of clothing is 40
Chapter 9, Problem 33(choose chapter or problem)
Life Expectancy of Clothing If the average life of a certain make of clothing is 40 months with a standard deviation of 7 months, what percentage of these clothes can be expected to last from 28 months to 42 months? Assume that clothing lifetime follows a normal distribution.
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