7.64 Historically, 93% of the deliveries of an overnight mail service arrive before 10:30 the following morning. If a random sample of 500 deliveries is selected without replace- ment from a population consisting of 10,000 deliveries, what is the probability that the sample will have a. between 93% and 95% of the deliveries arriving before 10:30 the following morning? b. more than 95% of the deliveries arriving before 10:30 the following morning?
7.64 Historically, 93% of the deliveries of an overnight mail service arrive before 10:30 the following morning. If a random sample of 500 deliveries is selected without replace- ment from a population consisting of 10,000 deliveries, what is the probability that the sample will have a. between 93% and 95% of the deliveries arriving before 10:30 the following morning? b. more than 95% of the deliveries arriving before 10:30 the following morning?
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....
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