4.1. A stock trader purchases 100 shares of BTC, and 200 shares of DOGE. Assume B is the in price change of BTC and D is the integer price change of DOGE over a certain time perie that the joint PMF of B & D is UNIFORM when constrained by the following formulas, a otherwise: -2sbs4 AND -1sd-bs1 a) Show the tabular (table) form of the Joint PMF for B and D. b) Find the marginal PMFS for the Random Variables B and D.

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