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The life span of a calculator manufactured by Texas Instruments has a normal distribution with a mean...

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The life span of a calculatormanufactured by Texas Instruments has a normal distribution with amean of 65 months and a standard deviation of 1 year. The companyguarantees that any calculator that starts malfunctioning within 38months of the purchase will be replaced by a new one. About whatpercentage of calculators made by this company are expected to bereplaced? (Hint: Draw a picture, shade the region, label the axes.)If the company sells 5000 calculators, how many are expected to bereplaced?

Answer & Explanation Solved by verified expert
4.3 Ratings (812 Votes)
Let X be the random variable that denotes the lifespan of acalculatorGiven EX 65 and VX 122X    See Answer
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