Question 1 of 5

•  A. A random variable is a subset of the sample space.
•  B. If a discrete random variable has three possible values 1, 2, and 3, then its expected value has to be one of these three values.
•  C. If the set of possible values of a random variable is {-2, -1, 0, 1, 2, 3}, then it is a discrete random variable.
•  D. The expected value of a random variable measures the variability of the random variable.

Question 2 of 52 Points

What follows is a numeric fill in the blank question with 1 blanks.

Question 3 of 52 Points

What follows is a numeric fill in the blank question with 1 blanks.

Question 4 of 52 Points

•  A. The number of dice that land on 2, when I roll 3 fair dice at the same time.
•  B. The number of games won by San Francisco 49ers in a regular season of 16 games, where each week they play a different team.
•  C. The number of diamond-suit cards in a poker hand of 5 cards, when these 5 cards are randomly drawn from a regular deck of 52 cards.
•  D. The number of times I need to throw a fair coin until the head comes up for the first time.

Question 5 of 52 Points

•  A. 0.2816
•  B. 0.5625
•  C. 0.5256
•  D. 0.0625
•  E. 0.0547