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2. I am tutoring 5 students in statistics and these are their scores on a recent exam: {74, 76, 77, 78, 80}. a) What is

2. I am tutoring 5 students in statistics and these are their scores on a recent exam: {74, 76, 77, 78, 80}. a) What is the average of these scores? b) What is the standard deviation of this population of scores? c) Convert all of these scores to z-scores. d) What is the average and standard deviation of these five z-scores?

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