Two cards are drawn randomly without replacement from an ordinary deck. Let X be the number of hearts and Y be the number of black cards obtained. (a) Write an expression for the joint PMF f(x; y)
(b) Tabulate the joint PMF
(c) Find the marginal PMF of X and Y
(d) Find P(Y = 1jX = 1)
(e) Tabulate P(X + Y <= z) for all possible values of z

Select the correct answer from each drop-down menu. rewrite the formula to find voltage. the formula for electrical power (p, in watts) is where v is the voltage in volts and r is the resistance in ohms. for a particular brand of water heater, r is 32 ohms and p is 0.5 watts. the formula to find v is , and the voltage at which the heater operates is volts.

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in