1. I flip a coin two times. What is the sample space?
{H,T}
{HH, HT, TT}
{HH, HT, TH,TT}
It depends on how the coin lands

2. The statistics of a particular basketball player state that he makes 4 out of 5 free-throw attempts.   The basketball player is just about to attempt a free throw. What do you estimate the probability that the player makes this next free throw to be?  
0.16
50-50.
0.80
1.2

3. Suppose you toss a thumbtack 60 times and it lands point up on 35 of the tosses. The approximate probability of landing point up is:
35.
0.35.
0.58.

4. Two coins are tossed and the total number of heads is counted
Two coins are tossed and the total number of heads is counted. Which of the following would be a legitimate probability model for the total number of heads? That is, which of the following models satisfies the rules of probability?
Number of heads 1 2
Probability
Number of heads 1 2
Probability
Number of heads 1 2
Probability
Top
Middle
Bottom

5. disjoint. complements. independent.
Suppose we toss a penny and a nickel. Let A be the event that the penny is a head and B be the event that the nickel is a tail. The events A and B are:
disjoint.
complements.
independent.

6. Suppose that I roll two fair dice (one is red and one is green)
Suppose that I roll two fair dice (one is red and one is green). If I want to figure out the probability of getting a sum of 7 or 11, I should:
Add P(sum=7) to P(sum=11)
Multiply P(sum=7) to P(sum=11)
Both
Neither

7. Suppose that I roll two fair dice (one is red and one is green)
Suppose that I roll two fair dice (one is red and one is green). If I want to figure out the probability of getting a 3 on the red die and a 5 on the green die, I should:
Add P(red=3) to P(green=5)
Multiply P(red=3) to P(green=5)
Both
Neither

8. Suppose X is a continuous random variable taking values between 0 and 1 and having a probability distribution described by the following density curve. The probability that X takes a value between 0 and 3/4 is:
0.875.
0.75.
3/8.

9. An event A occurs with probability 0. 3
An event A occurs with probability 0.3. Event B occurs with probability If A and B are disjoint, then P(A or B) =
0.80.
0.15.
0.65.

10. An event A occurs with probability 0. 3
An event A occurs with probability 0.3. Event B occurs with probability If A and B are disjoint, then P(A and B) =
0.80.
0.15.
0.65.

11. Answers
C, C, C, B, C, A, B, A, B, A (disjoint means it is impossible for both of them to happen)