Mathematics, 19.05.2020 15:03, Fatimaneedhelp

A manufacturer finds that the life expectancy of its best selling model of dishwashers is 11 years and the standard deviation is one year. The lifespans are approximately normally distributed . What percent of dishwasher models skill last from 9-13 years? A. About 68%. B. about 95%. C. About 34 percent. D. About 47.5 percent

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A manufacturer finds that the life expectancy of its best selling model of dishwashers is 11 years a...