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6 January, 21:58

The scores and their percent of the final grade for a statistics student are given. What is the student's weighted mean score? Score Percent of final grade Homework 86 20 Quiz 87 5 Quiz 91 5 Project 98 45 Final Exam 88 25 The student's weighted mean score is 91.00.

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  1. 6 January, 22:17
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    The student's weighted mean score is 92.2.

    Step-by-step explanation:

    To find the student's weighted mean scored, we multiply each grade by it's weight.

    Grades and weights:

    Homework: Grade of 86, weight of 20% = 0.2

    Quiz: Grade of 87, weight of 5% = 0.05

    Quiz: Grade of 91, weight of 5% = 0.05

    Project: Grade of 98, weight of 45% = 0.45

    Final Exam: Grade of 88, weight of 25% = 0.25.

    What is the student's weighted mean score?

    0.2*86 + 0.05*87 + 0.05*91 + 0.45*98 + 0.25*88 = 92.2

    The student's weighted mean score is 92.2.
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