During the First Year at a University That Uses a 4-Point

Essay

During the first year at a university that uses a 4-point grading system, a freshman took ten 3-credit courses and received one As, four Bs, three Cs, and two D.
Compute this student's grade point average.
__________
Let the random variable X denote the number of points corresponding to a given letter grade. Find the probability distribution of the random variable X and compute E(X), the expected value of X. E(X) = __________