Mathematics, 09.11.2019 08:31 prynnie
(from an actuarial exam) the random variables x and y have joint probability mass function p(x, y) for x = 0, 1 and y = 0, 1, 2. suppose that 3p(1, 1) = p(1, 2) and p(1, 1) maximizes the variance of xy . calculate the probability that x or y is zero.
Answers: 2
Mathematics, 21.06.2019 14:50
Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .
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Mathematics, 21.06.2019 16:00
Which fraction is not equivalent to 8/12 a. 2/3 b. 24/36 c. 4/10 d. 6/10
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Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?
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Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem
Answers: 3
(from an actuarial exam) the random variables x and y have joint probability mass function p(x, y) f...
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