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 1/6 (B

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Question 478412: 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

Thank you
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
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
---
No: P(x)'s add to more than 1.
------------------------------

(B)
x 3 6 8
P(x) 0.1 3/5 0.3
Yes
----------------------

(C)
x 20 30 40 50
P(x) 0.2 -0.2 0.7 0.3
No: P(x) cannot be negative
===========
Cheers,
Stan H.
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