dr2 points 3/20 Submlssions Used My Notes Ask Your T In your biology class, your

Question

dr2 points 3/20 Submlssions Used My Notes Ask Your T In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points avalable for each score. However, the lab score is worth 17% of your total grade, each major test is worth 21%, and the final exam is worth 41%. Compute the weighted average for the following scores: 97 on the lab, 97 on the first major test, 74 on the second major test, and 64 on the final exam. (Enter your answer to one decimal place.) 093

Explanation / Answer

solution=

Variable: x = score
The weighted average is =

       sum of the scores their weights
______________________________
sum of all the weights

sum of the scores their weights = 97(0.17) +(97+74)(0.21) +64(0.41) = 78.64

sum of all the weights   = 0.17+0.21+0.21+0.41   = 1.00

weighted average = 78.64 / 1.00 = 78.64

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