(Answered) 1 xyz university finds that 25 of its students withdraw

Statistics

1. XYZ University finds that 25% of its students withdraw without completing the calculus course. Assuming 20 students have registered for the course

a) Clearly state what the random variable in this problem is?

b) What is an appropriate distribution to be used for this problem and why?

c) Compute the expected number of withdrawals?

d) Compute the probability that exactly four will withdraw?

e) Compute the probability that more than three will withdraw?

f) Compute the probability that two or fewer will withdraw?

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