Suppose the scores on all the quizzes in Mr. Jones class were normally distributed with mean 78 and a standard deviation 6

A. What percent of scores are between 78 and 93?

B. Scores greater than or equal to 90 earn an "A”. What percent of quizzes earned an "A"?

C. What percent of scores fall between 71 and 95

D. If a student had a z-score of -1.24, what was there actual score on the quiz? Show your work