Determining weighted mean grade

Reference no: EM1315658

Q1) Weighted Mean A student of author earned of 92, 83, 77, 84 and 82 on her five regular tests. She earned grades of 88 on final exam and 95 on her class projects. Her combined homework grade was 77. Five regular tests count for 60% of final grade, final exam counts for 10%, project counts for 15% and homework counts for 15%. Determine her weighted mean grade? What letter grade did she earn? (A, B, C, D or F).

Q2) Car Emissions Environmental scientists measured greenhouse gas emissions of a sample of cars. Amounts given below are in tons (per year), expressed as CO₂ equivalents. Is value of 9.3 tons unusual?

7.2

7.1

7.4

7.9

6.5

7.2

8.2

9.3

Reference no: EM1315658

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