THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
A cereal manufacturer produces a cereal that claims to contain 16 ounces in each box.A sample of boxes results in the following table.

-What is the mean weight of the sample of cereal boxes?
A)15.5
B)15.7
C)16.0
D)16.5

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
A cereal manufacturer produces a cereal that claims to contain 16 ounces in each box.A sample of boxes results in the following table.
 
-What is the mean weight of the sample of cereal boxes?
A)15.5 
B)15.7 
C)16.0 
D)16.5

Quizplus · Accepted Answer

The mean weight of the sample can be calculated by finding the average weight of all the boxes. The sum of the weights in the sample is 157.4 ounces (11 x 14.3 + 5 x 14.7 + 8 x 15.5) and there are a total of 24 boxes in the sample. Thus, the mean weight is 157.4/24, which is approximately 15.7 ounces. Therefore, the best choice is B, 15.7.