4. You arrive at a bus station where buses arrive every 15 minutes, but you don’t know when the next bus will arrive. Which is the appropriate notation to describe your wait time (X)? X~Uniform[0,15] X~AN(7.5,4.33) X~N(7.5,4.33) X~Exp(7.5)

Q: Let A = -7 -7 08 Find - 3A. -3A =

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A: Given,

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Q: Suppose Var(X) = 88, Var(Y) = 17, and X and Y are independent. What is Var(.28X + .72Y)?

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Q: Suppose that n(U)=150, n(A)=78, n(B)=64, and n(AB) = 27. Find each of the following values. 13.…

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Q: Suppose Var(X) = 52, Var(Y) = 41, and X and Y are independent. What is Var(.89X + .11Y)?

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Q: Suppose Var(X) = 43, Var(Y) = 36, and X and Y are independent. What is Var(.67X + .33Y)?

A: GivenX and Y are independentVar(X)=43Var(Y)=36

Q: Suppose Var(X) = 4, Var(Y) = 78, and X and Y are independent. What is Var(.58X + .42Y)?

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Q: Suppose Var(X) = 71, Var(Y) = 12, and X and Y are independent. What is Var(.59X + .41Y)?

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