Question

The table lists the probability of Amy, Susan, Mark, Nina, and Jeff studying on a Sunday. Also, the average number of hours each studies is given.

Amy Susan Mark Nina Jeff
Probability: 0.23 0.31 0.17 0.19 0.10
Average Number
of Hours of Study:2.5 1.5 3 2 4.5

If you select 10 Sundays from the school year at random, who is likely to have studied the most hours overall?
a. Amy
b. Susan
c. Mark
d. Nina
e. Jeff

Answer 1

Answer:Amy is likely to have studied the most hours overall, and Nina is likely to have studied the least hours overall.

Explanation:

Answer 2

Amy: 2.5 hours * 10 sundays = 25 hours * 0.23 probability = 5.75 hours
Susan: 1.5 hours * 10 Sundays = 15 hrs * 0.31 probability = 4.65 hours
Mark: 3 hours * 10 Sundays = 30 hours * 0.17 probability = 5.10 hours
Nina: 2 hours * 10 Sundays = 20 hours * 0.19 probability = 3.8 hours
Jeff: 4.5 hours * 10 Sundays = 45 hours * 0.10 probability = 4.5 hours

Based on the result of my computation, Choice A.) Amy is likely to have studied the most hours over all with 5.75 hours.