Question

Find the z score that corresponds to P99, the 99th percentile of a standard normal distribution curve.

A.
–2.33
B.
0.01
C.
0.99
D.
2.33

Answer 1

D. 2.33

Explanation:

Hint- We have to use Inverse Normal Probability Distribution function. This function returns the x-value given the probability region to the left of the x-value.

We have to calculate the z score of the 99th percentile of a standard normal distribution curve.

i.e the value of probability less than z is given as 99th percentile or 0.99

Using inverse normal probability distribution function, we get

`z=2.3263\approx 2.33`