1

The scatterplot shows the relationship between x and y. A line of best fit is also shown. Which of the following is closest to the slope of the line of best fit shown?

A) 2.27

B) 0.44

C) -0.44

D) -2.27

2

In a study of a random sample of students' test scores, the mean score was 82, with a margin of error of 5. What can you conclude about the population mean test score?

A) It is less than 77

B) It is less than 77 or greater than 87

C) It is between 77 and 87

D) It is greater than 77

3

You have a standard deck of 52 playing cards. What is the probability of drawing a red card (heart or diamond) followed by a black card (club or spade) without replacement?

A) 0.25

B) 0.35

C) 0.32

D) 0.28

4

120, 264,368, 117, and x.

The mean and the median of the five numbers above are equal. Which of the following is a possible value of x?

A) 458

B) 453

C) 457

D) 451

5

The table above shows the land area, in square kilometers, of the five smallest countries in the world in 2016. Based on the table, what is the mean land area of the 5 smallest countries in 2016, to the nearest square kilometer?

A) 112

B) 30

C) 22

D) 18

6

You have a bag with 10 red marbles, 8 blue marbles, and 6 green marbles. If you randomly select 2 marbles from the bag without replacement, what is the probability that both marbles are blue?

A) \$9 / (67)\$

B) \$8 / (69)\$

C) \$6 /(67)\$

D) \$7 /(69)\$

7

You flip a fair coin three times. What is the probability of getting at least two heads?

A) \$5 / 2\$

B) \$1 / 2\$

C) \$3 / 2\$

D) \$7 / 2\$

8

The scatterplot above shows the high temperature on a certain day and the elevation of 8 locations in the Lake Tahoe Basin. A line of best fit for the data is also shown. Which of the following statements best describes the association between elevation and temperature in locations in the Lake Tahoe Basin?

A) As the elevation increases, the temperature tends to decrease.

B) As the elevation increases, the temperature tends to increase.

C) As the elevation decreases, the temperature tends to decrease.

D) There is no association between the elevation and the temperature.

9

A factory claims that the average weight of a product is 500 grams. A sample of 25 products has a mean weight of 485 grams with a standard deviation of 15 grams. Test the factory’s claim at the 0.01 significance level.

A) 520 grams

B) 560 grams

C) 540 grams

D) 500 grams

10

In a survey conducted among 300 residents of a city, 90 said they prefer tea over coffee. If the city has a total population of 15,000 residents, what is the best estimate of the number of residents who prefer tea over coffee in the entire city?

A) 4700

B) 4400

C) 4500

D) 4600