Continuous random variables with joint pdf
Assume that X and Y are continuous random variables with joint pdf f(x, y) = 6(1 - y) for (x, y) in the region bounded by x = 0, y = x, and y = 1, and f(x, y) = 0 otherwise.
Compute Cov(X, Y).
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Ray's Satellite Emporium desires to find out the best order size of their best selling satellite dish (model TS111). Ray has estimated the annual demand for this model at 1,000 units. His cost to carry one unit is $100 per year per unit, and he ha
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Printed circuit boards (PCB's) are employed in all electronic goods. The facility producing PCB's experiences returns at rate of two per month. Determine the probability that in any given month there will be less than two returns?
Assume G(x) = ax^4+6x^3+cx^2+dx+e where a,b,c,d,e are all real numbers and cannot equal to zero. You are told that G(-3)=-51, G(-1)=1/8, G(10)=-5, G(10)=squareroot(2)
Recent surveys point out that 47% of the eligible voters in the US plan on voting this year. If 10 eligible voters are randomly slelected, what is the expected number of people who plan on voting this year?
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