Ask Question
30 August, 05:08

A student of one of the authors earned grades of 63, 91, 88, 84, and 79 on her five regular statistics tests. She earned a grade of 86 on the final exam and 90 on her

class projects. Her combined homework grade was 70. The five regular tests count for 60%

of the final grade, the final exam counts for 10%, the project counts for 15%, and homework

counts for 15%. What is her weighted mean grade? What letter grade did she earn (A, B, C, D,

or F) ? Assume that a mean of 90 or above is an A, a mean of 80 to 89 is a B, and so on.

+3
Answers (1)
  1. 30 August, 05:44
    0
    Weighted mean grade: 81.2

    Letter grade: B

    Step-by-step explanation:

    5 regular tests:

    (63+91+88+84+79) / 5 * 60%

    = 405 / 5 * 0.6

    = 48.6

    Final exam:

    86 * 10% = 8.6

    Project:

    90 * 15% = 13.5

    Homework:

    70 * 15% = 10.5

    So her weighted mean grade is

    48.6 + 8.6 + 13.5 + 10.5 = 81.2
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A student of one of the authors earned grades of 63, 91, 88, 84, and 79 on her five regular statistics tests. She earned a grade of 86 on ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers