Suppose that T is a random variable with the following probability distribution: T: 3 4 p(t): 0.08 0.32 0.15 0.20 0.25 What is the probability that T is less than, or equal to - 4? a. b. What is the probability that T is greater than or equal to 3? c. What is the expected value of T? d. What is the standard deviation of T?

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