2.25 and scale parameter a

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Consider an item with time to failure T that
has a Weibull distribution with shape
parameter 2.25 and scale parameter 0.0004
per hours. When the item fails it is repaired to
an as good as new condition. The repairtime
(downtime) D has a lognormal distribution
with parameters 1.5 and 0.42. The item is
supposed to be in continuous operation.
(a) Find the average availability of the item.
(b) A preventive maintenance task that takes
5 hours is performed every 300 hours. Find
the operational availability of the item.
Transcribed Image Text:Consider an item with time to failure T that has a Weibull distribution with shape parameter 2.25 and scale parameter 0.0004 per hours. When the item fails it is repaired to an as good as new condition. The repairtime (downtime) D has a lognormal distribution with parameters 1.5 and 0.42. The item is supposed to be in continuous operation. (a) Find the average availability of the item. (b) A preventive maintenance task that takes 5 hours is performed every 300 hours. Find the operational availability of the item.
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