Question: In a large section of a statisticsclass, the points for the final exam are normallydistributed, with a mean of 68 and a standard deviation of

In a large section of a statisticsclass, the points for the final exam are normallydistributed, with a mean of 68 and a standard deviation of 7. Grades are assigned such that the top10% receiveA's, the next20% receivedB's, the middle40% receiveC's, the next20% receiveD's, and the bottom10% receiveF's. Find the lowest score on the final exam that would qualify a student for anA, aB, aC, and a D.

The lowest score that would qualify a student for an A is

nothing

(Round up to the nearest integer asneeded.)

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