US Montgomery&Runger;, Applied Statistics and Probability for Engineers, 6th Edi

Question

US Montgomery&Runger;, Applied Statistics and Probability for Engineers, 6th Edition & Practice Gradebook Downloadable eTextbook FULL SCREEN Question 1 Suppose that the log-ons to a computer network follow a Poisson process with an average of 4 counts per minute. (a) What Is the mean time between counts (in minutes)? (Round yours answers to 3 decimal places.) (b) what is the standard deviation between counts (in minutes)? (Round yours answers to 3 decimal places) (c) it it is an average of 3 counts per minute, find the value of X such that PXx) 0.(Round yours answers to 4 decimal places.) minutes Click if you would like to Show Work for this question: oen Sham.wark Question Attempts: 0 of 3 ased AVE FOR LATER FS F10 F11 F12Hoe End 8 2 3 4 0 O P

Explanation / Answer

A)

mean time between counts =1/4 =0.25

b)std deviation =0.25

c)P(X<x) =1-e-3x =0.95

taking log on both sides ; x =-ln(0.05)/3 =0.999

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