a professor teaches 3 sectionof introductory stats.resultsof the midterm :section # students writing exams mean gradeof students writing exams(%)1 50 552 30 683 20 75calculate the combinedgradeof all the students writing examsplse respond ASAP thanksRecall that mean = sum of scores divided by number of scores ? sum of scores =frequency * meanSum of scores of class 1 = 50*55 = 2750Sum of scores of class 2 = 30*68 = 2040Sum of scores of…
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