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In a large section of a statistics class the points for the final exam are normally distributed with a mean of 72 and a standard deviation of

In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule:

·         The top 10% receive A's.

·         The next 20% receive B's.

·         The middle 40% receive C's.

·         The next 20% received D's.

·         The bottom 10% receive F's.

Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D. (Round your answers to two decimal places.)

Final Exam GradesAND20OK1El4080BOB APoints scored on final examFIGURE FOR EXERCISE 42

Apr 23 2020 View more View Less

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