Question

Determine whether each of the following is a probability distribution. Give reasons for your answer.

x	0	1	2	3	4
P(x)	0.1	0.5	0.2	–0.1	0.3

Answer 1

Here, P(X = 3) = –0.1 < 0

Probability for an value of x cannot be negative.

∴ Given distribution is not a probability distribution.