Question: The probability distribution for the random variable x follows. x f(x) 20 0.22 25 0.10 30 0.28 36 0.40 Is this a valid probability distribution?

The probability distribution for the random variable x follows.

x f(x)

20 0.22

25 0.10

30 0.28

36 0.40

Is this a valid probability distribution?

What is the probability that x = 30 (to 2 decimals)?

What is the probability that x is less than or equal to 25 (to 2 decimals)?

What is the probability that x is greater than 30 (to 2 decimals)?

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