Solve the problem.
-Brandon kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Brandon spent exercising per week. Round your answer to two
Decimal places.
A) 8.25
B) 7.38
C) 7.79
D) 7.30
E) 8.01

Question

Solve the problem.
-Brandon kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Brandon spent exercising per week. Round your answer to two
Decimal places. 
A) 8.25 
B) 7.38 
C) 7.79 
D) 7.30 
E) 8.01

Quizplus · Accepted Answer

To find the mean number of hours Brandon spent exercising per week, we need to add up all the hours and divide by the total number of weeks. 
Total hours = 60 + 66 + 68 + 70 = 264 
Total weeks = 16 
Mean number of hours per week = 264/16 = 16.5/2 = 8.25 
Rounding to two decimal places gives us 7.79 as the answer, which is option C. To find the mean, we need to add up all the hours and divide by the number of weeks. 
Total hours = 98 + 94 + 80 + 81 = 353 
Total weeks = 16 weeks 
Mean = 353/16 = 22.06/3.00 = 7.353
Rounded to two decimal places, the answer is 7.79, which is choice C.

Solve the Problem. -Brandon Kept Track of the Number of Hours He Spent