Question

Assume that the random variable X is normally distributed , with mean = 80 and standard deviation = 15. Compute the probability P(X > 92) .

Answer 1

Assume that the random variable X is normally distributed , with mean = 80 and standard deviation = 15. Compute the probability P(X > 92) .​

step 1

Find z score

z=(92-80)/15

z=0.8

step 2

using the z-score table

For z=0.8

P=0.7881

therefore

answer is

P=0.7881