On average, an office receives a phone call every 5 minutes. For each call, the two operators, and Bob flip a fair coin to decide who takes the call. (a) Calculate the probability that exactly two calls arrive between 10:00 and 10:20. (b) Calculate the probability that between 10:00 and 10:20, all calls are taken by Alice. (c) Assuming that between 10:00 and 10:20, 3 calls arrive in total, what is the conditional proba- bility that Alice has taken exactly two of those calls?

On average, an office receives a phone call every 5 minutes. For each call, the two operators, and Bob flip a fair coin to decide who takes the call. (a) Calculate the probability that exactly two calls arrive between 10:00 and 10:20. (b) Calculate the probability that between 10:00 and 10:20, all calls are taken by Alice. (c) Assuming that between 10:00 and 10:20, 3 calls arrive in total, what is the conditional proba- bility that Alice has taken exactly two of those calls?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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