Find the probability of the sum of ownership

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Reference no: EM131823168

Suppose that the time that owners keep their cars (purchased new) is normally distributed with a mean of 7 years and a standard deviation of 2 years. We are interested in how long an individual keeps his car (purchased new). Our population is people who buy their cars new.

If we are to pick 10 individuals, find the probability that the sum of their ownership time is more than 55 years.

Reference no: EM131823168

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