4.2 Addition Probability Worksheet
- 1. A single die is rolled. The events “getting a number greater than 4” and “rolling an odd number” would be mutually exclusive.
A) False
B) True
- 2. In a Calculus class there are 11 freshmen and 15 sophomores; 5 of the sophomore are females, and 8 of the freshmen are males. If a student is selected at random, what is the probability of selecting a freshman or a female?
- 3. In a recent survey 8 people watched ABC, 7 people watched NBC, and 12 people watched CBS. If a person is picked at random, what is the probability that the person watched ABC or CBS?
- 4. If a die is rolled on time, what is the probability of getting a number more than 5 or an even number?
- 5. The staff at a small company includes: 2 secretaries, 40 factory workers, 7 specialists, 3 engineers, and 2 executives. If a person is selected at random, what is the probability that he or she is a factory worker or a secretary?
- 10. The probability that a person own a microwave is 0.85. The probability that a person owns a washer is 0.65. The probability that a person own both a microwave and a washer is 0.54. What is the probability that a person owns a washer or a microwave? **decimal**
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