Exercise 2. A stock market trader buys 50 shares of stock A and 100 shares of stock B. Let X and Y be the price changes to A and B, respectively, over certain period of time. Assume that the joint PMF pX, Y (x, y) is uniform over the set of integers satisfying −1 ≤ x ≤ 3, −1 ≤ y − x ≤ 1. (this means that the joint PMF is constant over the integers in this set) (a) Find the joint PMF pX, Y (x, y), the marginal PMFs pX(x) and pY (y). (b) Find E[X] and E[Y ]. (c) Determine the trader’s profit.

If the findings and the results are not presented properly, the research completed was a waste of time and money. true false

Asemiprofessional baseball team near your town plays two home games each month at the local baseball park. they split the concessions 50/50 with the city, but keep revenue from ticket sales for themselves. the city charges the team $100 each month for the three-month season. the team pays the players and manager a total of $1,000 a month. the team charges $10 for each ticket, and the average customer spends $7 at the concession stand. attendance averages 30 people at each home game.in order to break even, how many tickets does the team need to sell for each game? a. 33b. 37c. 41e. 49f. 244

Grant wants to transfer the ownership of his warehouse to holly by deed. to do so requires