Question

Suppose a person's score on a personality test that is normally distributed with a mean of 50 and a standard deviation of 10. If you

were to pick a person completely at random, what is the probability that you would pick someone with a score on this test higher than 70?

Answer 1

2.28%

Explanation:

P(X > 70) = 1 - Ф((70 - 50)/10) = 0.0228 = 2.28%