True or false 1. A continuous random variable is the result of a measurement with an instrument of some kind. Answer: FALSE 2. In a discrete probability distribution, the probability of any value of the random variable must be between –1 and + 1. Answer: TRUE 3. The sample space for the experiment of flipping 3 coins is 8. Answer: TRUE 4. Jack and Jill are going to guess whether a card drawn by Pete is a club or not. Pete signals to Jack that the card is black. Therefore Jack has an advantage over Jill in this game. Answer: TRUE 5. If P(A and B) = 0, then A and B are mutually exclusive. Answer: TRUE 6. If P(A and B) = P(A) * P(B), then A and B are independent. Answer: TRUE 7. It takes a big dog to weigh a ton. (I don’t get this question) Answer: FALSE 8. In the standard normal distribution, the area to the left of the mean is –0.5. Answer: FALSE – because it should still be 0.5 not negative. 9. A value of random variable in any probability distribution can never be more than 3 standard deviations from the mean. Answer: TRUE 10. The speed of a car on the freeway is an example of a continuous random variable. Answer: FALSE thanks to all who help.