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 out the probability that the average of those counts is more than 104.8 mosquitos per square meter. Suppose that the variable is normally distributed.
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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