The average score on an exam was reported as 61% with a standard deviation of 16%….

The average score on an exam was reported as 61% with a standard
deviation of 16%. You may assume exam scores are normally
distributed. If I select 10 people at random, what is the
probability that the average of their scores would be …

Place Order

(A) …more than 50%?

(B) …between 70% and 85%?