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The probability distribution for the random variable & follows. x f(x) 20 0.20 25 0.15 30 0.25 35 0.40 a. Is this probability distribution valid?

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The probability distribution for the random variable & follows. x f(x) 20 0.20 25 0.15 30 0.25 35 0.40 a. Is this probability distribution valid? Explain. - Select your answer - b. What is the probability that x - 30 (to 2 decimals)? c. What is the probability that @ is less than or equal to 25 (to 2 decimals)? d. What is the probability that I is greater than 30 (to 2 decimals)

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