Homework Help: math

Posted by April on Sunday, January 24, 2010 at 7:24pm.

A police department reports that the probabilities that 0,1,2, and 3 burglaries will be reported in a given day are .51, .44, .04, and .01, respectively. Find the expected number of burglaries reported in a given day.

How do I figure this out? I simply do not know. Help, please?

math - Damon, Sunday, January 24, 2010 at 7:30pm
In 100 days, how many burglaries?
44(1) + 4(2) + 1(3) = 55
55/100 =

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