A teacher grades in such a way that exactly 50% of the students earn either a B
Question:
A teacher grades in such a way that exactly 50% of the students earn either a B or higher grade. If a student drawn at random takes four unrelated courses with this teacher, what is the probability that the student will earn
a. All four grades of B or higher,
b. Exactly three grades of B or higher, and
c. Two or more grades of B or higher?
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a 15 4 0625 b 45 3 5 1 412...View the full answer
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