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# Which of the foll

The key point to solve the problem:

A given distribution of probabilities of a random variable X is said to be probability distribution if the sum of probabilities associated with each random variable is equal to 1

i.e. ∑(pi) = 1

Given distribution is : Clearly,

Sum of probabilities = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

= 0.3 + 0.2 + 0.4 + 0.1

= 1

The given distribution is a probability distribution.

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