Homework Help: Math

Posted by Nathan on Saturday, February 23, 2013 at 8:45pm.

In a computer lab there are two dierent printers. From 1pm-2pm Printer1 receives on average 12 print
jobs and Printer2 receives on average 5 print jobs. Assume the number of print jobs requested on Printer1
and on Printer2 are independent of each other.

(a) Define random variables to denote the number of print jobs each printer gets and state their distributions.

(b) What is the expected number of print jobs for Printer1 from 1:00pm-1:25pm?

(c) What is the probability that Printer2 receives 10 or more print jobs between 1pm and 2pm?

(d) What is the distribution of the number of print jobs requested in that computer lab from 1pm-2pm?

(e) What is the probability that there are 0 print jobs requested in the computer lab between 1pm and
2pm?

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