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(4) Consumer Reports rated airlines and found that 85% of the flights involved in the study arrived on time (that is, within 15 minutes of the scheduled arrival time). Consider a random sample of 200 flights. a. What is the probability that 175 flights will arrive on time? b. What is the expected number that will arrive on time? c. What does this value mean in the context of the problem?

(4) Consumer Reports rated airlines and found that 85% of the flights involved in the study arrived on time (that is, within 15 minutes of the scheduled arrival time). Consider a random sample of 200 flights. a. What is the probability that 175 flights will arrive on time? b. What is the expected number that will arrive on time? c. What does this value mean in the context of the problem?

College Algebra
College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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e. Find the probability that less than 3 of the observed trucks are speeding. (4) Consumer Reports rated airlines and found that 85% of the flights involved in the study arrived on time (that is, within 15 minutes of the scheduled arrival time). Consider a random sample of 200 flights. a. What is the probability that 175 flights will arrive on time? b. What is the expected number that will arrive on time? c. What does this value mean in the context of the problem? (5) The following information will also be used in the related discussion forum for this portion of the module. A realistic estimate for the probability of an engine failure on a transatlantic flight is 1/14000. Use this probability and the binomial probability formula or your calculator to find the probabilities of 0, 1, 2, and 3 engine failures for a three engine jet and the probabilities of 0, 1, and 2 engine failures for a two-engine jet. Carry all numbers to as many decimal places as your calculator will display. (You should have seven answers to this question when complete.) er l6-e Ster 5- er l6-22 ider 10-17 der 1-30 NEW H CONNECT W SCAN OR TEXT YOUR NA (336) 682-61 SO WE CAN KNOW YOU'RE H REATER HINGS 0S:1 NHOC
Transcribed Image Text:e. Find the probability that less than 3 of the observed trucks are speeding. (4) Consumer Reports rated airlines and found that 85% of the flights involved in the study arrived on time (that is, within 15 minutes of the scheduled arrival time). Consider a random sample of 200 flights. a. What is the probability that 175 flights will arrive on time? b. What is the expected number that will arrive on time? c. What does this value mean in the context of the problem? (5) The following information will also be used in the related discussion forum for this portion of the module. A realistic estimate for the probability of an engine failure on a transatlantic flight is 1/14000. Use this probability and the binomial probability formula or your calculator to find the probabilities of 0, 1, 2, and 3 engine failures for a three engine jet and the probabilities of 0, 1, and 2 engine failures for a two-engine jet. Carry all numbers to as many decimal places as your calculator will display. (You should have seven answers to this question when complete.) er l6-e Ster 5- er l6-22 ider 10-17 der 1-30 NEW H CONNECT W SCAN OR TEXT YOUR NA (336) 682-61 SO WE CAN KNOW YOU'RE H REATER HINGS 0S:1 NHOC
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