Question

Assume the random variable X is normally distributed with mean 50 and standard deviation 7 . Find the 81st percentile.

Answer 1

about 56.1

Explanation:

You want the 81st percentile of a normal distribution with mean 50 and standard deviation 7.

Inverse normal

The inverse normal function is used to find the X-value for a given area. The attached calculator result tells us that the 81st percentile is about 56.1.

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