Question

Attempts: Average: 9 3. The bivariate probability distribution Aa Aa im is saving to buy his significant other a diamond necklace for Valentine's Day. Jim works two jobs, a day job at a grocery store and a night job at a restaurant. Jim's monthly income at each job can take on one of three values because his hours worked at each job only assume three values. Define x as Jim's monthly income from his day job and y as Jim's monthly income from his night job. Jim's total income varies according to the following bivariate probability distribution. 110 275 440 100 0.10 0.33 0.15 x 250 0.22 0.01 0.04 400 0.08 0.01 0.06 Hx ,and Hy250.25 Ox- 110.75 ,and σ,- 130.70 Consider the random variable xy. The expected value of x y is 435.75 of a linear combination) (Hint: use the formula for expected value

Answer 1

Given that, 2500.22 0,01 marginal X: ICO 2s。uoo 275 년 2SO-2S ,221-2S

(30.70 Va8 67 O 一83625.75. - -88685 .16321 n.02