SOLUTION: Approximately 26% 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

Algebra ->  Probability-and-statistics -> SOLUTION: Approximately 26% 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      Log On


   

Question 907111: Approximately 26% 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? (Give the answer to 3 decimals places.)
Answer by reviewermath(1029) About Me  (Show Source):
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Approximately 26% 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?
probability = %281+-+0.26%29%5E10 = highlight%280.049%29
(b) What assumption did you make to calculate the probability in Part (a)?
Assumption: The results of calls are independent of each other.
(c) What is the probability that at least one call results in a reservation being made? (Give the answer to 3 decimals places.)
probability = 1+-+%281+-+0.26%29%5E10 = highlight%280.951%29