Probability Examples - Section 2.4, 2.5
1. A manufacturer has five seemingly identical computer terminals available for shipping. Un-
known to her, two of the five are defective. A particular order calls for two of the terminals
and is filled by randomly selecting two of the five that are available.
(a) List the sample space for this experiment.
(b) Let A denote the event that the order is filled with two non-defective terminals. List
the sample points in A.
(c) Assign probabilities to the sample points for this experiment.
(d) Find the probability of event A.
2. The casino game craps involves rolling two dice and adding the outcomes.
(a) List the sample space for rolling two dice.
(b) Assign a probability for each sample point in the sample space.
(c) Let the event Abe obtaining a sum of 7 when rolling two dice. What is the probability
of event A?
(d) Let the event Bbe obtaining a sum of 4 or less when rolling two dice. What is the
probability of event B?
(e) In the game of craps, you roll a craps when your two dice sum to 2. What is the proba-
bility of rolling a craps?
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