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November 14, 2021

we are looking for the 90th percentile

Home/Mathematics

I'm working on a statistics exercise and need an explanation and answer to help me learn.

Let X be a Normal random variable with mean 30 and standard deviation 8. Find its 90th percentile (i.e. find a number y such that P(X < y) = 0.9)

(provide one digit to the right of decimal point)

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