Is the following a discrete probability distribution?
X P(x)
40 0.12
66 0.29
2 0.16
38 0.14
57 0.03
34 0.08
solution
P(x)=0.12+0.29+0.16+0.03+0.08=0.82
total=0.82
sum of probabilities are not equal to 1 than
it is not a valid probability distribution
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