1. The Los Angeles Times (Dec. 13, 1992) reported that 80% of airline passengers prefer to sleep on long flights rather than watch movies, read, etc. Consider randomly selecting 25 passengers from a particular long flight. Define a random variable X and answer the following questions. a) What is the probability that exactly 12 of those selected passengers prefer sleeping? b) What is the probability that all passengers selected prefer to sleep on the long flight? c) What is the probability that at least 20 passengers refer sleeping on the long flight? d) What is the average number of passengers that prefer sleeping on the long flight and calculate and interpret the standard deviation of X.

1. The Los Angeles Times (Dec. 13, 1992) reported that 80% of airline passengers prefer to sleep on long flights rather than watch movies, read, etc. Consider randomly selecting 25 passengers from a particular long flight. Define a random variable X and answer the following questions. a) What is the probability that exactly 12 of those selected passengers prefer sleeping? b) What is the probability that all passengers selected prefer to sleep on the long flight? c) What is the probability that at least 20 passengers refer sleeping on the long flight? d) What is the average number of passengers that prefer sleeping on the long flight and calculate and interpret the standard deviation of X.

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...

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