Question

For the continuous probability function for f(x) = Kx2

e

-x when x≥0. Then find i)K, ii)

mean and iii) Variance​

Answer 1

Answer:

what ask the question properly

Answer 2

Answer:

A random variables X has the following probability function

x -3 -2 -1 0 1 2 3

P(x) K 0.1 K 0.2 2K 0.4 2K

Find (i) K (ii) Mean (iii) Variance