10.2.1. The Advanced Placement Program allows high school students to enroll in special classes in which a subject is studied at the college level. Proficiency is measured by a nalional examination. Universities typically grant course credit for a sufficiently strong performance. The possible scores are 1. 2, 3, 4, and 5, with 5 being the highest. The following table gives the probabilities associated with the scores recen tly made on the
U.S. History test (1):
Suppose six students from a class take the test. What is the probability they earn three S's, two 4's, and a 3?
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