SOLUTION: Determine whether each of the distributions given below represents a probability distribution. Justify your answer. x 1 2 3 4 P(x) 1/12 5/12 1/3 1/12

Algebra ->  Probability-and-statistics -> SOLUTION: Determine whether each of the distributions given below represents a probability distribution. Justify your answer. x 1 2 3 4 P(x) 1/12 5/12 1/3 1/12       Log On


   

Question 359556: Determine whether each of the distributions given below represents a probability distribution. Justify your answer.

x
1
2
3
4

P(x)
1/12
5/12
1/3
1/12

(A)

x
3
6
8

P(x)
2/10
.5
1/5


(B)
x
20
35
40
50

P(x)
0.4
-0.2
0.5
0.3

(C)

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A) No, sum%28P%28x%29%29=11%2F12, must be 1.
B) No, sum%28P%28x%29%29=9%2F10, must be 1.
C) No, P%28x%29%3E=0 for every x.