1. Quiz 3a  Probability

2. 1. What is the probability of selecting a spade from a deck of 52 cards? a) 1/4 b) 1/2 c) 10/52 d) 1/13

3. 2. What is the probability of rolling 8 or “doubles” with two dice? a) 5/36 b) 1/6 c) 11/36 d) 5/18

4. 3. What is the probability of getting heads twice in a row tossing a coin and then rolling 6 with a die. a) ½ + 1/6 b) ½ x 1/6 c) ¼ + 1/6 d) ¼ x 1/6

5. 4. Which of the following is an incorrect way of reporting a probability? a) 1/4 b) 5/25 c) 20.0% d) 0.256

6. 5. What is the probability of not selecting a person with 0-type blood type? (2% AB, 5% B, 23% A, 70% 0) a) 23% b) 30% c) 50% d) 70%

7. 6. What is the probability of being dealt an ace then a jack from a deck of 52 cards? a) 4/52 x 4/52 b) 4/52 x 3/52 c) 4/52 x 4/51 d) 4/52 x 3/51

8. 7. What is the probability of getting 6 boys and no girls in a single family (assume P male =50%)? a) 1/6 b) 1/2 c) (½) 6 d) 6(½)

9. 8. What is the probability of rolling a die and getting a “one” after rolling 4 ones in a row. a) (½) 5 b) (1/6) 5 c) 5(1/6) d) 1/6