AP Stats Simulations

• (A) I only

• (B) I and II only

• (C) I and III only

• (D) II and III only

• (E) I, II, and III

A game of chance is played in which X, the number of points scored in each game, has the distribution shown above. Which of the following is true for the sampling distribution of the sum, Y, of the scores when the game is played twice?

• (A) Y takes on values 0, 1, 2 with respective probabilities 0.3, 0.4, and 0.3.

• (B) Y takes on values 0, 2, 4 according to a binomial distribution with mean equal to 2.

• (C) Y takes on values 0, 2, 4 with respective probabilities 0.3, 0.4, and 0.3.

• (D) Y takes on values 0, 1, 2, 3, 4 according to a binomial distribution with mean equal to 2.

• (E) Y takes on values 0, 1, 2, 3, 4 with respective probabilities 0.09, 0.24, 0.34, 0.24, and 0.09.

A company has 400 employees. Their mean income is $20,500 and the standard deviation of their incomes is $3,750. The distribution of incomes is approximately normal. How many of the 400 employees do you expect to have an income between $13,000 and $28,000?

• 50

• 100

• 200

• 380

• 400

If you have 1,000 schools on the list, number them from 000 to 999 and read the table three digits at a time. What are the first five schools in this sample?

• 24, 19, 83, 72, 41

• 241, 983, 724, 152, 579

• 2419, 8372, 4152, 5761, 0849

• A

• B

• C

• D

• E

An imitation of a chance behavior that uses a model that accurately represents the situation.

• Simulation

• Survey

• Experiment

• Observational Study

Which of the following is the best estimate of the standard deviation of the distribution in the figure?

• 18

• 9

• 54

• 97

• 106

The boys and girls basketball teams at a high school had their heights measured at practice. The following data was recorded for their heights. What can you conclude from the distributions?

• The girls have a larger median and a larger range in heights.

• The boys had a smaller median height than the girls; however, the boys had a larger range of heights.

• The median height for the boys and the girls is the same; however, the girls have a larger range.

• The median height for the boys is larger; however, the girls have a larger range.

• No information can be concluded from the distribution since there is no key included.