A factory manager collected data on the number of breakdowns per day. From these data, he derived the probability distribution for X, the number of breakdowns on a given day:

X 0 1 2
prob 0.80 0.15 0.05

1)The mean of X is (exact answer)

2)The standard deviation of X is (to three places after the decimal)

3)On average, how many breakdowns are there per day?

4)Assuming there are weekend shifts in the factory (work goes on every day), about how many breakdowns are expected during a one-year period. (non-leap year, and round to the nearest whole number).