AP Stat Exam Review: Probability (III)

• 17.5%
• 10%
• 12.5%
• 25%

P(Freshman or Pizza):

• 27/50
• 4/50
• 3/50
• 30/50

P(Pizza ∩ Water) =

• 62/182
• 120/400
• 58/400
• 140/400

P(Sandals|Pants):

• 4/20
• 6/15
• 1/2
• 2/7

A set of all possible outcomes is known as - 

• a list
• a complement
• a sample space
• an event

A randomly selected student is asked to respond, yes, no, or maybe to the question "Do you intend to vote in the next presidential election?" The sample space is {Yes, No, Maybe}. Which of the following represents a legitimate probability model for this sample space?

• 0.4, 0.4, 0.2
• 0.4, 0.6, 0.4
• 0.3, .03, 0.3
• 0.5, 0.3, -0.2

There are 10 red marbles and 8 green marbles in a jar. If you take three marbles from the jar (without replacement), the probability that they are all red is: 

• 0.069
• 0.088
• 0.147
• 0.171

A die is loaded so that the number 6 comes up three times as often as any other number.  What, then, is the probability of rolling a 6?

• .125
• .375
• .500
• .250

Suppose that A and B are two independent events with P(A) = .2 and P(B) = .4. 
P(A∩B^C) is

• .08
• .12
• .52
• .60

Which of the following could be considered binomial experiments?
I.  On each shot, a basketball player’s chance of scoring a free throw is estimated to be 0.38. The player tried 40 shots and the number of baskets is recorded.
II.  On a specific island, it has been determined that the probability is 0.12 that an inhabitant carries a certain defective gene. Inhabitants are tested until 10 with the defective gene are found.
III.  For a certain spinner, P(red) = 1/3, P(green) = 1/4, and P(blue) = 5/12. The spinner is spun 100 times and the number of each color is recorded.

• I only
• I and II
• I and III
• I, II, and III