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Statistics

In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of your total grade, each major test is worth 22.5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 83 on the first major test, 94 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.
86.02
88.42
88.02
85.55
90.42

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  1. .25(92) + .225(83) + .225(94) + .3(84) = ?

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  2. 87.65

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  3. 88.02

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