Question

Which of the following tables shows a valid probability density function? Select all correct answers. Select all that apply:
P(X = z) P(X = z) 10 3 10 4
0 3-10 1-2 1-515 X 0. 0 0 0 0 X 01234 0123
0 0
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Answer #1

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For valid probability distribution,all probabilities should be positive and between 0 and 1(inclusive),also all probabilities should sum up to 1.

So, First, second and third distributions are valid probability density functions.

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