00:01
In this problem, we are given the values of a discrete random variable x, which are minus 4, 4, and 6, and the respective values of the probabilities.
00:14
Well, that's given as well, which are 1 by 3, 7 by 8, and 1 by 3.
00:20
And we have to determine whether this is a valid probability distribution table or not.
00:26
So here, let's just take the sum of the probabilities.
00:29
So we see that this will be 1 by 3 plus 7 by 8 plus 1 by 3.
00:36
So that will be equal to 2 by 3 plus 7 by 8, which comes out to be 16 plus 21 divided by 24.
00:46
And when we add 16 and 21, we will get 37 as the result...