Random Variables, Random Process, Probability, Deep Dives, Statistics.
Tails} is denoted as |{Heads, Tails}| = |S| and it’s 2. Thus, we have: P(X=Turn Right) = |{Heads}| / |S| = 1 / 2 = 0.5 Similarly, P(X=Turn Left) = |{Tails}| / |S| = 1 / 2 = 0.5 The sum of all probabilities in the PMF of X equals 1.0. The PMF of X (Image by Author) The PMF of W is a bit more