The sample space of a random experiment is {a, b, c, d, e, f}, and each outcome is equally likely. A random variable is defined as follows: Outcome a b c d e f X 0 0 1.7 1.7 2 3 Determine the probability mass function of X. Use the probability mass function to determine the following probabilities. Give exact answers in the form of fraction. (a) P(X=1.5) (b) P(.53) (d)P(0<=X<2)(c) P(X=0 or X = 2)