Which of the following are valid probability distributions for a discrete random variable? Check all that apply.
A. 0.12, -0.02, 0.18, 0.08, 0.15, 0.05, 0.16, 0.27, 0.02, 0.36, -0.15, -0.22
B. 0.16, 0.12, 0.02, 0.08, 0.22, 0.05, 0.15, 0.02, 0.18
C. 0.35, 0.18, 0.21, 0.06, 0.17, 0.03
D. (0.01) 11, (0.01) 12, (0.01) 13, …
E. 0.16, 0.193, 0.222, 0.233, 0.067, 0.125
Answer:
All values must be positive and they must add up to 1. I’ll let you do the math, but I can tell right off that E is not a PD, and D is. Just use a calculator for the others. Also I’m not sure about choice A as it has…