AP Review Day 1

There are 10 blue marbles, 4 red marbles, and 8 yellow marbles in a bag. John draws three marbles without replacement. What is the probability the first two marbles are yellow and the third is red?

• 0.0242

• 0.0240

• 0.0625

• 0.1364

What is the probability a couple with 4 children has at least one boy?

• 0.9375

• 0.0625

• 0.25

• 0.875

A survey was conducted asking 340 people their favorite color. The results are in the table. What is the probability a randomly selected person’s favorite color is red, given the person is female?

• 0.2414

• 0.5185

• 0.1235

• 0.2349

Susie draws a card from a standard 52 card deck. What is the probability she draws a diamond or a face card?

• 0.4231

• 0.4808

• 0.25

• 0.2308

Express the null hypothesis and alternative hypothesis in symbolic form. The coach of a basketball team claims the team’s field goal percentage is greater than 40%.

• H₀: p = 0.4, Ha: p > 0.4

• H₀: p = 0.4, H_a: p < 0.4

• H₀: p < 0.4, H_a: p > 0.4

• H₀: p > 0.4, H_a: p < 0.4

A sample of 25 women has a mean pulse of 65 bpm and standard deviation of 4.1 bpm. Use a .05 significance level to test the claim that the mean pulse rate of all women is greater than 60 bpm.

• Reject H₀. There is sufficient evidence to warrant rejection of the claim that the mean is greater than 60 bpm

• Fail to reject H₀. There is not sufficient evidence to warrant rejection of the claim that the mean is greater than 60 bpm.

• Reject H₀. There is not sufficient evidence to warrant rejection of the claim that the mean is greater than 60 bpm.

• Fail to reject H₀. There is sufficient evidence to warrant rejection of the claim that the mean is greater than 60 bpm.

The following are Jane’s scores on her math tests: 85, 70, 86, 92, 87, 78. What is the mean of Jane’s scores?

• 83

• 86.5

• 86

• 81

Find the median for the following data set: 11, 13, 17, 11, 10, 15, 11, 12, 13, 15.

• 12.5

• 13

• 12

• 13.5

Identify the mode for the following data set: 25, 24, 33, 56, 24, 33, 34, 50, 45, 24, 19.

• 24

• 33

• 24 and 33

• 28.5

The following is a list of 10 students’ scores on a Statistics test: 75, 60, 96, 92, 88, 81, 78, 65, 83, 89. Calculate the sample standard deviation of the test scores.

• 11.6

• 11.0

• 134.56

• 9