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A furnace thermostat has a constant failure rate of one failure per 25 months and a mean time to repair of four hours.,  Please answer last 3 subparts  a) What is the thermostate reliablity after 12 months? After 24 months? After 36 months?  b) What is the availablity?  c) Should a design team try to streamline the repair process to reduce the MTTR? Explain. Does the location of the furnace matter?  d.) Given a reliability target of 99 % ,what combination of  mu,µ,and time ,t  ,values will suffice? You must do at least two different combinations of µ  and t

A furnace thermostat has a constant failure rate of one failure per 25 months and a mean time to repair of four hours.,  Please answer last 3 subparts  a) What is the thermostate reliablity after 12 months? After 24 months? After 36 months?  b) What is the availablity?  c) Should a design team try to streamline the repair process to reduce the MTTR? Explain. Does the location of the furnace matter?  d.) Given a reliability target of 99 % ,what combination of  mu,µ,and time ,t  ,values will suffice? You must do at least two different combinations of µ  and t

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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  1. A furnace thermostat has a constant failure rate of one failure per 25 months and a mean time to repair of four hours., 

Please answer last 3 subparts 

a) What is the thermostate reliablity after 12 months? After 24 months? After 36 months? 

b) What is the availablity? 

c) Should a design team try to streamline the repair process to reduce the MTTR? Explain. Does the location of the furnace matter? 

d.) Given a reliability target of 99 % ,what combination of  mu,µ,and time ,t 

,values will suffice? You must do at least two different combinations of µ  and t 

 

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