4.2 Probability Distributions for Discrete Random Variables
A complete description of a discrete random variable requires that we specify all the values the random variable can assume and the probability associated with each value. To illustrate, consider Example 4.4.
Example 4.4 Finding a Probability Distribution—Coin-Tossing Experiment
Figure 4.2
Venn diagram for the two-coin-toss experiment
Problem
Recall the experiment of tossing two coins (p. 118), and let x be the number of heads observed. Find the probability associated with ...
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