Question

5. Suppose your instructor assigns grade for the course based on your performance as

following: 24% for home works, 16% for quizzes, 25% for midterm exam, and 35% for
final exam. What would your grade score be if you scored 75 points on your homework
assignments, 85 points on quizzes, 90 points on midterm exam, and 80 points on your
final exam? (Hint: create probability table and calculate mean value).
(5 points)

Answer 1

82.1

Explanation:

Multiply each grade by its weighted percentage, then add up the results.

`\left[\begin{array}{ccc}x&P(x)&xP(x)\\75&0.24&18\\85&0.16&13.6\\90&0.25&22.5\\80&0.35&28\\&Sum&82.1\end{array}\right]`