Question

d) Find the value of k and find mean and variance of X
P(x) = kx, for x = 1, 2, 3
= 0 otherwise​

Answer 1

Answer:

Question= D

Let x= 1

p(x) = Kx

p(1) = k*1

p = k

The value of the k is = p

Let x = 2

p(x)= Kx

p(2)= k*2

2p= 2k

2p/2= k

p = k

The value of the k is=p

Let x= 3

p(x)= Kx

p(3)= k*3

3p= 3k

3p/3=k

p=k

The value of the k is = p

Step-by-step explanation:

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