Probablity generating function function
A certain descrete random variable has probablity generating function function πx(q) = (1/3) (2 +q)/(2-q) compare p(x) for x 0, 1, 2, 3, 4, 5 (formula for summing a geometric series helps). Find E(x) and Var(x).
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An urn contains one black and n-1 white balls. Balls are drawn at the random till the black ball is selected. Find out the probability that exactly k white balls will be drawn before the black one is if
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Find present value of the cash flow of $5000 per year if annual rate of interest is 4.5%. Suppose that interest is compounded annually and round to nearest cent.
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Of the 72 senior starting players in a certain conference, what is the probability that 3 or more will receive pro contracts? Recalculate the answer using an appropriate approximate method.
Man wandering in desert walks 2.3 miles in direction S 31 Degrees W. At that time how far is he from starting point, and find his bearing from his starting point?
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