Special Probabitity Distribution

Question 1

Special probability distribution

Answer 1

It tries to describe the behavior of random variables

Question 2

Hyper geometric distribution

Answer 2

It is the probability distribution of a discrete random variable that describes a probability of k successes from n draws from a finite population of size n where in each draw is either or a failure generally

Question 3

A random variable is said to follow hypergeometric distribution if it’s distribution is

Answer 3

F(Kk Nn)= (K) (N-k)
(k) (n-k)
————-
Ncn
The mean of a hyper geometric distribution is nK/N
And the variance is given by ((N-n)/n-1)n.k(1-(k/n))