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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
The downtime per day for a certain computing facility has averaged 4.0 hours for the last year. The standard deviation of downtimes of the last 20 failures is 0.8 hours.
a Find the probability that the average daily downtime for a period of 20 days is between 1 and 5 hours. b Find the probability that the total downtime for the 30 days is less than 115 hours.
c What assumptions are necessary for the answers in parts (a) and (b) to be valid approximations?
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