Question

Bart takes a random sample of 50 students in his seventh-grade class and finds that 40% of the sample prefers chocolate ice cream over vanilla ice cream. There are 200 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer chocolate ice cream over vanilla ice cream? (5 points)


40

80

50

200

Answer 1

Based on the sample proportion of 40%, we would expect about 40% of the total seventh-grade students to prefer chocolate ice cream over vanilla ice cream.

40% of 200 students = 0.40 * 200 = 80 students

Therefore, about 80 students in the seventh grade would be expected to prefer chocolate ice cream over vanilla ice cream.

The correct answer is 80.