Let X be the number of accidents in a factory per week. , It has the pmf f(x) = 1 / (x+1)(x+2) ; x=0,1,2,... Find the conditional probability of x > or = 4, given that x >or = 1
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Originally Posted by amor_vincit_omnia Let X be the number of accidents in a factory per week. , It has the pmf f(x) = 1 / (x+1)(x+2) ; x=0,1,2,... Find the conditional probability of x > or = 4, given that x >or = 1 . Do you know how to get these two probabilities from the pmf?
Last edited by mr fantastic; Jun 17th 2008 at 02:28 AM.
Originally Posted by mr fantastic . Do you know how to get these two probabilities from the pmf? . Therefore . (This is an example of a telescoping series) is got in a similar way ....
Originally Posted by mr fantastic is got in a similar way .... Also, note that
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