Mathematics, 30.07.2019 14:30 natalie2sheffield
One class of 75 students has an average midterm score of 67 and an sd of 12. another class of 325 students has an average of 72 and an sd of 15. find the average and the sd of the combined list of 400 students. hint: this uses the sd of a long list formula. one class of 75 students has an average midterm score of 67 and an sd of 12. another class of 325 students has an average of 72 and an sd of 15. find the average and the sd of the combined list of 400 students. hint: this uses the sd of a long list formula.
Answers: 1
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One class of 75 students has an average midterm score of 67 and an sd of 12. another class of 325 st...
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