Question

Mr. Emmer gave a test in his Chemistry class. The scores were normally distributed with a mean of 82 and a standard deviation of 4. A student is randomly chosen. What is the probability that the student scores an 88 or below?

Answer 1

93.32 %

Explanation:

88 - 82 = 6 points

this is 6 /4 = z-score + 1.5

from z score table , this corresponds to .9332 or 93.32 %