Question

Students Preferences for Field Trip
Students Seacoast Mountains Totals
7th Grade 60 40 100
8th Grade 90 110 200
Totals 150 150 300
Gloria surveyed all of the campers to determine their preferred field trip. The results are displayed in the table. Which of the following is a relative frequency that can be found with the table? Round the percentage to the nearest tenth.

(1 point)

70% of the people who preferred mountains were 8th graders.

32% of 7th-grade campers preferred the mountains.

40% of the people who preferred the seacoast were 7th graders.

90% of 8th-grade campers preferred the seacoast.

Answer 1

The correct choice is the third one.

Calculation: 60 of the 150 people who preferred the seacoast were 7th graders, so 60/150 = 0.4 = 40.0% (rounded to the nearest tenth).

(Other options: 110/150 = 73.3%; 40/100 = 40.0%; 90/200 = 45.0%.)