QUESTION 15 x PX x 2 042 5 015 7 In the table above find P

QUESTION 15

x

P(X = x)

2

0.42

5

0.15

7

?

In the table above, find P(X = 7). Hint: What is one of the properties of a valid probability distribution?

Solution

Let, P(X=7)=x

Since, 0.42+0.15+x=1

X=0.43