Suppose that the number of spam emails that arrive to your Google account follows a Poisson process with a rate of AG = 2 per hour, the numb of spam emails that arrive to your AOL account follows a Poisson process with a rate of =1 per hour, and the two Poisson processes are independent

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Chapter1: Combinatorial Analysis
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Suppose that the number of spam emails that arrive to your Google account follows a Poisson process with a rate of AG = 2 per hour, the number
of spam emails that arrive to your AOL account follows a Poisson process with a rate of = 1 per hour, and the two Poisson processes are
independent.
Let V be the waiting time to have the k th spam email in your Google account, and let W be the waiting time to have the k th spam email
in your AOL account.
What is the probability that the waiting time to have the 2nd spam email in your Google account is longer than the waiting time
v Choose...
to have the 1st spam email in your AOL account, i.e., P(V2 > W1) ?
3
4
5/9
What is the expected number of spam emails that arrive to your Google account from 9:00am to 1:00pm?
2/3
What is the expected waiting time to have the 5th spam email in your Google account from 9:00am, given that the first spam
email has arrived at 10:00am?
8
1/3
4/9
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Transcribed Image Text:Suppose that the number of spam emails that arrive to your Google account follows a Poisson process with a rate of AG = 2 per hour, the number of spam emails that arrive to your AOL account follows a Poisson process with a rate of = 1 per hour, and the two Poisson processes are independent. Let V be the waiting time to have the k th spam email in your Google account, and let W be the waiting time to have the k th spam email in your AOL account. What is the probability that the waiting time to have the 2nd spam email in your Google account is longer than the waiting time v Choose... to have the 1st spam email in your AOL account, i.e., P(V2 > W1) ? 3 4 5/9 What is the expected number of spam emails that arrive to your Google account from 9:00am to 1:00pm? 2/3 What is the expected waiting time to have the 5th spam email in your Google account from 9:00am, given that the first spam email has arrived at 10:00am? 8 1/3 4/9 Previous page Next page
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