Consider the probability function. (Give your answers exactly.)
P(x) =
5 − x
10
, for x = 1, 2, 3, 4
(a) Find the mean.
(b) Find the standard deviation.
P(x) =
5 − x
10
, for x = 1, 2, 3, 4
(a) Find the mean.
(b) Find the standard deviation.