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StatisticsQ&A LibraryIn a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 73 and a standard deviation of 9. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive C's, the next 20% receive D's , and 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. Click here to view Page 1 of the Standard Normal Table Click here to view Page 2 of the Standard Normal Table. The lowest score that would qualify a student for an A is (Round up to the nearest integer as needed.)Question

I don't understand how to solve for this. I'm having trouble understanding the percentages

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