posted by Chinadoll .
Using formula P(x) = x/15
For each of the values x = 1, 2, 3, 4, and 5.
a. probability distribution of x.
b. Show that the probability distribution of x satisfies the properties of a discrete probability distribution.
c. mean of x.
sketch the two specified normal curves on the same set of axes:
µ = 20 and o = 3, µ = 20 and o = 6.