# help with statistics problem ?

assume the random variable X is normally distributed, with mean = 44 and standard deviation = 4. what is the 7th percentile?

### 1 Answer

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- Wayne DeguManLv 72 months ago
We require P(X < x) = 0.07

i.e. P(Z < (x - 44)/4) = 0.07

so, (x - 44)/4 = -1.475

Hence, x = 44 - 4(1.475) => 38

:)>

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