Chapter 5, AP Statistics

An assignment of probabilities must obey which of the following?

• The probability of any event must be a number between 0 and 1, inclusive.

• The sum of all the probabilities of all outcomes in the sample space must be exactly 1.

• The probability of an event is the sum of the probabilities of outcomes in the sample space in which the event occurs.

• All three of the above.

• A and B only.

Event A has probability 0.4. Event B has probability 0.5. If A and B are independent, then the probability that both events occur isIf you draw an M&M candy at random from a bag of the candies, the candy you draw will have one of six colors. The probability of drawing each color depends on the proportion of each color among all candies made. The table below gives the probability that a randomly chosen M&M had each color before blue M & M’s replaced tan in 1995.

• 0.2.

• 0.3.

• 0.7.

• 0.8.

• impossible to determine from the information given.

what is the probability that you draw either a brown or a green candy?

• 0.1.

• 0.3.

• 0.4.

• 0.6.

• 0.7.

Suppose we roll two six-sided dice--one red and one green. Let A be the event that the number of spots showing on the red die is three or less and B be the event that the number of spots showing on the green die is three or more.

The events A and B are

• disjoint.

• conditional.

• independent.

• reciprocals.

• complementary.

Please see the accompanying table.

Please see the accompanying table.

Please see the accompanying table.

About 7% of men in the United States have some form of red-green color blindness. Suppose we want to simulate randomly selecting 4 U.S. adult males to determine the probability that at least one is red-green color-blind. Which of these are correct assignments of digits for this simulation?

• 0-7 = color-blind, 8-9 = not color-blind

• 1-6 = color-blind, 7-10 = not color-blind

• 01-07 = color-blind, 08-99 & 00 = not color-blind

• 00-10 = color-blind, 11-99 = not color-blind

The probability that a randomly selected student in AP Statistics will do their closer on time is 0.18. What's the probability that out of a group of 6 students, at least one of them will turn their closer on time?

• 0.000034

• 0.82

• 0.304

• 0.696

• 0.18

Let's pretend that on this test last year students averaged a 6 out of 10 on the multiple choice section with a standard deviation of 2. If Mrs. O was feeling crazy and doubled each MC score then subtracted 1, what would the new mean and standard deviation be?

• mean = 6, sd = 2

• mean = 12, sd = 4

• mean = 11, sd = 3

• mean = 11, sd = 4

• mean = 12, sd = 3