The course grade in a statistics class is the average of the scores on five examinations. Suppose that a student's scores on the first four examinations (out of 100)are 65, 70, 91, and 78. What is the highest course average Possible after the last examination?
A)100
B)76
C)81
D)6

Question

Quizplus · Accepted Answer

The highest possible score on the last examination is 100. Adding this to the other scores gives a total of 65 + 70 + 91 + 78 + 100 = 404. Dividing by 5 (the number of exams) gives the highest possible average: 404 / 5 = 80.8, which rounds up to 81.

The Course Grade in a Statistics Class Is the Average