A consumber agency randomly selected 1700 flights for two major airlines, A and B. The following table gives the two-way classification of these flights based on airline and arrival time. Less than 30 minutes lates 30 minutes to 1 hour late More than 1 hour late Airline A 429 390 92 Airline B 393 316 80 (a) If one flight is selected at random from these 1700 flights, find the probability that it is a flight on airline B. (b) If one flight is selected at random from these 1700 flights, find the probability that this flight is more than 1 hour late given that it is a flight on airline A. (c) Are the events ´airline A'and less than 30 minutes late' are indpendent? Justify your answer.
A consumber agency randomly selected 1700 flights for two major airlines, A and B. The following table gives the two-way classification of these flights based on airline and arrival time. Less than 30 minutes lates 30 minutes to 1 hour late More than 1 hour late Airline A 429 390 92 Airline B 393 316 80 (a) If one flight is selected at random from these 1700 flights, find the probability that it is a flight on airline B. (b) If one flight is selected at random from these 1700 flights, find the probability that this flight is more than 1 hour late given that it is a flight on airline A. (c) Are the events ´airline A'and less than 30 minutes late' are indpendent? Justify your answer.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4. A consumber agency randomly selected 1700 flights for two major airlines, A and B. The following
table gives the two-way classification of these flights based on airline and arrival time.
Less than 30 minutes lates 30 minutes to 1 hour late More than 1 hour late
390
316
Airline A
429
92
Airline B
393
80
(a) If one flight is selected at random from these 1700 flights, find the probability that it is a
flight on airline B.
(b) If one flight is selected at random from these 1700 flights, find the probability that this flight
is more than 1 hour late given that it is a flight on airline A.
(c) Are the events 'airline A’ and 'less than 30 minutes late' are indpendent? Justify your
answer.
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