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Suppose 8 5 % of graduating seniors attend graduation. We will assume they make their decision to attend independently of each other. A group of

Suppose 85% of graduating seniors attend graduation. We will assume they make their decision to attend independently of each other. A group of 20 randomly graduating senior is chosen.
a. What is the probability that exactly 15 graduating seniors will attend graduation?
b. What is the probability that at most 15 graduating seniors will attend graduation?
c. What is the probability that fewer than 17 graduating seniors will attend graduation?
d. What is the probability that greater than 18 graduating seniors will attend graduation?
e. What is the probability that 15 or more graduating seniors will attend graduation?

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