The rates of on-time flights for commercial jets are continuously tracked by the U.S. department of transportation. Recently, southwest air had the best rate with 85% of its flights arriving on time. A test is conducted by randomly selecting 11 southwest flights and observing whether they arrive on time. a) find the probability that at least 7 flights arrive on time b) would it be unusual for southwest to have all 11 flights arrive on time? Yes or no ( unusual here means a chance of less than 20%)
The rates of on-time flights for commercial jets are continuously tracked by the U.S. department of transportation. Recently, southwest air had the best rate with 85% of its flights arriving on time. A test is conducted by randomly selecting 11 southwest flights and observing whether they arrive on time. a) find the probability that at least 7 flights arrive on time b) would it be unusual for southwest to have all 11 flights arrive on time? Yes or no ( unusual here means a chance of less than 20%)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The rates of on-time flights for commercial jets are continuously tracked by the U.S. department of transportation. Recently, southwest air had the best rate with 85% of its flights arriving on time. A test is conducted by randomly selecting 11 southwest flights and observing whether they arrive on time.
a) find the
b) would it be unusual for southwest to have all 11 flights arrive on time? Yes or no ( unusual here means a chance of less than 20%)
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