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%)

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

See similar textbooks