You may need to use the appropriate appendix table or technology to answer this question Professor Avanti s Stats test scores

Question

You may need to use the appropriate appendix table or technology to answer this question Professor Avanti s Stats test scores distributed normally had a mean of 74 He says anyone scoring below 60 will fail the class This grading scheme failed 6 9 of the class What was the standard deviation of the test scores 1 48 7 70 9 44 12 85

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