On Titanium, you will find anonymized scores from Midterm Exam #1. (a) Compute the sample mean and sample standard deviation. (b) Compute your own z-score. Were you above or below

the mean? (b) Compute your own z-score. Were you above or below the mean? (c) Create a histogram for the letter grades A, B, C, D, and F. (d) Are the letter grades normally distributed? If not, what kind of distribution is it? Can you think of a reason that the scores would not be normally distributed? (e) How might you adjust your study practices to improve your performance the next exam?on