(Answered) Approximately 30 of the calls to an airline reservation

Engineering

Approximately 30% of the calls to an airline reservation phone line result in a reservation being made.

a. Suppose that an operator handles 10 calls. What is the probability that none of the 10 calls result in a reservation?

b. What assumption did you make to calculate the probability in Part (a)?

c. What is the probability that at least one call results in a reservation being made?

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