The number of electrical outages in a city varies from day to day.Assume that the number of electrical outages (x) in the city has the following probability distribution:

x

f(x)

0

0.85

1

0.12

2

0.02

3

0.01

The mean and the standard deviation for the number of electrical outages (respectively) are ________.

0.26 and 0.577

2.60 and 0.333

0.19 and 0.504

1.90 and 0.254