Q51Multiple choice
The probability distribution of a random variable x is given as under: kx 2 for x = 1, 2,3 2kx for x = 4,5,6 P( X = x ) = 0 otherwise where k is a constant. Calculate
- (i)E(X)
- (ii)E (3X2)
- (iii)P(X ≥ 4)
The probability distribution of a random variable x is given as under: kx 2 for x = 1, 2,3 2kx for x = 4,5,6 P( X = x ) = 0 otherwise where k is a constant. Calculate