Question: The probability distribution for the random variable x follows. x f(x) 20 0.25 25 0.20 30 0.20 35 0,35 (a) Is this probability distribution valid?

The probability distribution for the random variable x follows. x f(x) 20 0.25 25 0.20 30 0.20 35 0,35 (a) Is this probability distribution valid? Explain Since P(x) for all values of x and RX) - this ---Select-- a proper probability distribution (b) What is the probability that x - 307 (c) What is the probability that x is less than or equal to 25? (d) What is the probability that x is greater than 30

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