Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN: 9781133382119
Author: Swokowski
Publisher: Cengage
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The waiting times for commuters on the Red Line during peak rush hours follow a uniform distribution between 0 minutes and 12 minutes.

d) What is the probability that a randomly selected commuter on the Red Line during peak rush hours waits between 4 and 9 minutes? Give your answer as a fraction. Give your answer accurate to three decimal places. e) What is the probability that a randomly selected commuter on the Red Line during peak rush hours waits exactly 4 minutes?
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Transcribed Image Text:d) What is the probability that a randomly selected commuter on the Red Line during peak rush hours waits between 4 and 9 minutes? Give your answer as a fraction. Give your answer accurate to three decimal places. e) What is the probability that a randomly selected commuter on the Red Line during peak rush hours waits exactly 4 minutes?
The waiting times for commuters on the Red Line during peak rush hours follow a uniform distribution between 0 minutes and 12 minutes. a) State the random variable in the context of this problem. O rv X = waiting for a train O rv X = a uniform distribution O rv X = a randomly selected commuter on the Red Line during peak rush hours O rv X = the waiting time for a randomly selected commuter on the Red Line during peak rush hours b) Compute the height of the uniform distribution. Leave your answer as a fraction. c) Which of the following is the correct picture of the probability distribution of X? a bell-shaped curve that starts at 0 and ends at 12 O a rectangle with edges at 0 and 12
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Transcribed Image Text:The waiting times for commuters on the Red Line during peak rush hours follow a uniform distribution between 0 minutes and 12 minutes. a) State the random variable in the context of this problem. O rv X = waiting for a train O rv X = a uniform distribution O rv X = a randomly selected commuter on the Red Line during peak rush hours O rv X = the waiting time for a randomly selected commuter on the Red Line during peak rush hours b) Compute the height of the uniform distribution. Leave your answer as a fraction. c) Which of the following is the correct picture of the probability distribution of X? a bell-shaped curve that starts at 0 and ends at 12 O a rectangle with edges at 0 and 12
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