Dr. Liu is about to assign grades of A,B,C or D, where D is a failing grade, to his ADM class of 100 students. (a) How many different distributions of grades are possible (by “distribution” we consider only the number of people of each grade)? E.g., A=20, B=30, C=30, D=20 is one distribution. (b) How many different distributions of grades are possible, if we require that no fewer than 80% of the students may pass?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Dr. Liu is about to assign grades of A,B,C or D, where D is a failing grade, to his ADM
class of 100 students.
(a) How many different distributions of grades are possible (by “distribution” we consider only the
number of people of each grade)? E.g., A=20, B=30, C=30, D=20 is one distribution.
(b) How many different distributions of grades are possible, if we require that no fewer than 80% of the
students may pass?

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