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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Exercise 2.7.19. Suppose that 15 percent of the families in a certain country have no children, 20 percent have 1, 35 percent have 2, and 30 percent have 3. Suppose further that each child is equally likely to be a boy or a girl, independent of the other children. A family is chosen at random, and we write B for the number of boys in this family, and G for the number of girls. Write down the joint probability mass function of (B, G). Exercise 2.7.20. We roll two fair dice. Find the joint probability mass function of X and Y when (a) X is the largest value obtained, and Y is the sum of the values; (b) X is the value on the first die, Y is the largest value; (c) X is the smallest value, and Y is the largest.
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