1. Gravetter/Wallnau/Forzano, Essentials - Chapter 5 - End of Chapter question 25

For each of the following, identify the exam score that should lead to the better grade.

A score of X = 60 on an exam with = 72 and = 12, or a score of X = 70 on an exam with = 82 and = 8?

X = 60 corresponds to z =

, and X = 70 corresponds to z =

.

Therefore, .

A score of X = 85 on an exam with = 70 and = 10, or a score of X = 58 on an exam with = 49 and = 6?

X = 85 corresponds to z =

, and X = 58 corresponds to z =

.

Therefore, .

A score of X = 26 on an exam with = 20 and = 2, or a score of X = 32 on an exam with = 24 and = 4?

X = 26 corresponds to z =

, and X = 32 corresponds to z =

.

Therefore,