Consumer Reports rated airlines and found that 89% of the flights involved in the study arrived on time (i.e., within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline industry, consider a random sample of 199 flights. (Round your answers to two decimal places.) a.What is the expected number that will arrive on time? b.What is the standard deviation of this distribution?
Consumer Reports rated airlines and found that 89% of the flights involved in the study arrived on time (i.e., within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline industry, consider a random sample of 199 flights. (Round your answers to two decimal places.) a.What is the expected number that will arrive on time? b.What is the standard deviation of this distribution?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Consumer Reports rated airlines and found that 89% of the flights involved in the study arrived on time (i.e., within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline industry, consider a random sample of 199 flights. (Round your answers to two decimal places.)
a.What is the expected number that will arrive on time?
b.What is the standard deviation of this distribution?
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