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1. A student receives test scores of 50, 75, and 90.The student's final exam score is 82 and homework score is 75. Each test is

1. A student receives test scores of 50, 75, and 90.The student's final exam score is 82 and homework score is 75. Each test is worth 15% of the final grade, the final exam is 35% of the final grade and the homework grade is 20% of the final grade.

a) What is the student's mean score in the class BEFORE the final exam?

b) What is the student's mean score in the class AFTER the final exam?

c) Calculate the normal non-weighted average of the 5 grades and compare to the weighted averagein part b.

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