math
posted by April .
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?

In 100 days, how many burglaries?
44(1) + 4(2) + 1(3) = 55
55/100 =