A fuel injection system is designed to last 18 years, with a standard deviation of 1.4 years. What i

Discussion in 'Calculator Requests' started by math_celebrity, Oct 29, 2020.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    A fuel injection system is designed to last 18 years, with a standard deviation of 1.4 years. What is the probability that a fuel injection system will last less than 15 years?

    Using our z-score calculator, we see that:
    P(X < 15) = 0.416834
     
    math_celebrity, Oct 29, 2020
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