The table below is to be valid probability distribution for a data set.

Question

The table below is to be valid probability distribution for a data set.

x	P(x)
4	0.31
5
6	0.58
11	0.04
12	0

What is the missing probability to complete the probability distribution?

P(5) =

Answer 1

In order to determine the answer to this problem, consider what you know about probability. The basic rules are:

Probabilities must be greater than or equal to zero

Probabilities must be less than or equal to one

The sum of probabilities over a set of events, where the events cover the entire sample space, must equal one.

The third rule is most helpful here. Can you see what you need to do now?