The probability is .90 that a vending machine in the Oxnard University Student Center will dispense the

Question:

The probability is .90 that a vending machine in the Oxnard University Student Center will dispense the desired item when correct change is inserted. If 200 customers try the machine, find the probability that
(a) At least 175 will receive the desired item and
(b) That fewer than 190 will receive the desired item. Explain.