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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 2CYU
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SuperFastCopy has three identical copying machines. When a machine is being used, the time until it breaks down has an exponential
distribution with a mean of 2 weeks. A repairperson is kept on call to repair the machines. The repair time for a machine has an exponential
distribution with a mean of 0.5 week. The downtime cost for each copying machine is $100 per week.
Question: The expected number of machines broken down is? (round to two decimal places, e.g. x.xx or xx.xx or xxx.xx):
Transcribed Image Text:SuperFastCopy has three identical copying machines. When a machine is being used, the time until it breaks down has an exponential distribution with a mean of 2 weeks. A repairperson is kept on call to repair the machines. The repair time for a machine has an exponential distribution with a mean of 0.5 week. The downtime cost for each copying machine is $100 per week. Question: The expected number of machines broken down is? (round to two decimal places, e.g. x.xx or xx.xx or xxx.xx):
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