L is 75, or 125? or is it about the same for BOUI! J. A teaching assistant gives a quiz with 10 questions and no part credit. After grading the papers, the TA writes down for each student the number of ques. tions the student got right and the number wrong. The average number of right answers is 6.4 with an SD of 2.0; the average number of wrong answers is 3.6 with the same SD of 2.0. The correlation between the number of right answers and the number of wrongs is -0.50 +0.50 -1 +1 can't tell without the data Explain. Figure for exercise 12 ...

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