A teacher grades in such a way that exactly 50% of the students earn either a B
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A teacher grades in such a way that exactly 50% of the students earn either a B grade or higher. If a student drawn at random takes three unrelated courses with this teacher, what is the probability that the student will earn
a. No grades of B or higher
b. Exactly two grades of B or higher, and
c. One or more grades of B or higher?
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a NNN 18 125 b ...View the full answer
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