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CaptRespect · Answer 1 · 2023-07-14T01:30:28+0000

In order to calculate the mean of the scores, we can multiply each score with the corresponding number of students, add all resulting scores and divide the sum by the total number of students:

$\begin{gathered} \operatorname{mean}=(65\cdot2+70\cdot4+75\cdot7+80\cdot7+85\cdot2+90\cdot2+95\cdot7+100\cdot3)/(2+4+7+7+2+2+7+3) \\ \operatorname{mean}=(2810)/(34) \\ \operatorname{mean}=82.647 \end{gathered}$

Rounding to the nearest tenth, the mean is 82.6.

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