Part 3: Transforming Raw Scores and Z Scores (10 points)

Instructions

Solve the following problems and answer the associated questions.

1.Ernesto just got back his exam grades in three classes. In biology the class mean was 75 with a standard deviation of 10, and Ernesto scored an 80. In political science Ernesto scored a 76, the class mean was 80, and the standard deviation was 12. In statistics the class mean was 84 with a standard deviation of 8, and Ernesto scored an 88. Use z scores to help Ernesto figure out in which class he is doing the best. Also, what percentile is he in for the class he is doing the best in? Show your work. (5 points)