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

Question 618785: Determine whether each of the distributions given below represents a probability distribution. Justify your answer.
(A)
x
1
2
3
4

P(x)
1/4
5/12
1/3
1/6

(B)
x
3
6
8

P(x)
0.1
3/5
0.3

(C)
x
20
30
40
50

P(x)
0.2
-0.2
0.7
0.3

Found 2 solutions by ewatrrr, solver91311:
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

Hi
(B)
x
3
6
8
P(x)
0.1
3/5
0.3
1
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

The values have to all be non-negative and the sum of all the values must be 1.

John

My calculator said it, I believe it, that settles it

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