Total scores. Here are the total scores of 10 students in
Chapter , Problem 1.120(choose chapter or problem)
Total scores. Here are the total scores of 10 students in an introductory statistics course: 62 93 54 76 73 98 64 55 80 71 Previous experience with this course suggests that these scores should come from a distribution that is approximately Normal with mean 72 and standard deviation 10. (a) Using these values for m and s, standardize the scores of these 10 students. (b) If the grading policy is to give a grade of A to the top 15% of scores based on the Normal distribution with mean 72 and standard deviation 10, what is the cutoff for an A in terms of a standardized score? (c) Which of the 10 students earned a grade of A in the course? Show your work.
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