For each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer. a. A score of X = 70, on an exam with M = 82 and s 5 8; or a score of X = 60...

For each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer.

a. A score of X = 70, on an exam with M = 82 and s 5 8; or a score of X = 60 on an exam with m = 72 and s = 12.

b. A score of X = 58, on an exam with m = 49 and s = 6; or a score of X = 85 on an exam with m = 70 and s = 10.

c. A score of X = 32, on an exam with m = 24 and s = 4; or a score of X = 26 on an exam with m = 20 and s = 2.