Answered: On-Time Airplane Arrivals The…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...

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A) On-Time Airplane Arrivals The Cincinnati airport ranked 7 in major U.S. airports in on-time arrivals in the last quarter of 2008 with an 81.8% on-time rate. Choose 5 arrivals at random and find the probability that at least 1 was not on time. Please round the final answer to 2 or 3 decimal places.

P (at least 1 was not on time) =

B) Autism In recent years it was thought that approximately 1 in 90

children exhibited some form of autism. The most recent CDC study concluded that the proportion may be as high as 1 in 88. If indeed these new figures are correct, choose 2 children at random and find these probabilities. Enter your answer as a fraction or a decimal rounded to three decimal places.

What is the probability that none have autism?

P (none have autism)=

C) Video Game Video games are rated according to the content. The average age of a gamer is 35 years old. In a recent year,16.1% of the video games were rated Mature. Choose 3 purchased games at random. Find the following probabilities. Round the final answers to three decimal places.

Find the probability that none of the three were rated mature.

P (none were rated mature) =

Answer A, B and C.

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