Chapter 5 - Section 5.2 - Probability Distribution of a Discrete Random Variable - Exercises - Page 186: 5.11

Let N denote uninsured motorists in a large city, M denote insured motorists in a large city. In a sample of two motorists, the number of motorists who are uninsured can be 0 ( given by MM), 1(given by NM or MN), or 2 (given by NN). Thus, x can assume any of three possible values: 0,1 or 2. The probabilities of these three outcomes are calculated as follows: P(0) = P(MM) = .7396 P(1) = P(MN or NM) = P(MN)+P(NM) = .1204+.1204 = .2408 P(2) = P(NN) = .0196

Refer to the graph