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htbl blan tepese 2 0 .02 .14 06 |:14 I: 1 05 06 12 .12 0 .15 .09 .02 03? 2 ?? a) (10 pts) Calculate the marginal pmfs of X and Y. b) (10 pts) Calculate P(O<X+Y<4) c) (5 pts) Are X and Y independent. Justify your answer. d) (10 pts) Calculate the correlation coefficient and interpret the result. f Of u randomly selected male voters, X, are registered democrats whereas of n,a

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E R R 50, 1,2,3 Px (i)0.4 0.12 .15 0.02 0.43 (2): 0.06 to i4t0.09 +0.03:0, 3 2 Similasla P, G) 0.31 Py(s) 0.17 We get,0.25 0.

All values hold ged excet x 2.2 )-0.0 2-0.09 . 0.03 0.86 y ohe independent, e Py (o,o: o.02 E(x)-Σχ r(x)-0x0.25+ 1x0.43+2x0.3

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