Help please! Math

A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will last less than 10 years?

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  1. 12-10 = 2
    2 years = 2.25 std below the mean.
    So, check your Z table for P(Z<-2.25)

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  2. 22%

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