Question

One hundred teenagers are sampled at random about how much time (in hours) they spend doing homework on a given night. The results are displayed in the graph below. Predict about how many teenagers out of 250,000 would spend 1 hour doing homework on a give night.

Answer 1

0.43x250,000 = 107,500 teenagers.

Explanation:

43% of students spend 1 hr on HW< and there are 25,000 students.

43% is basically just 43/100, so 0.43x250,000 is 107,500 students.