The following information shows the amount of time (in minutes) that a mechanic on an assembly line misses the design completion time when working on a certain job. Negative values indicate early completion.
Minutes (x): -2 -1 0 1 2
P(x) : .1 .1 .2 .35 .25
A.) Graph the probability distribution of X.
B.) Find the mean and variance of X.
C.) Find P(X < 0).