Question 1112447
Which is a probability distribution? 

X	1	2	3	4	5
P(X)	1/20	2/20	3/20	4/20	5/20
P(X)'s don't add up to 1
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X	2	4	6	8	15
P(X)	1/19	3/19	4/19	4/19	7/19
Is a prob dist.
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X	1	2	3	4	5
P(X)	1/10	1/10	1/10	1/10	1/10
P(X)'s don't add up to 1
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Cheers,
Stan H.
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