A discrete r.v X has the p.m.f as below -1 1 2 P 0.1 0.3 0.4 0.2 O Find the p.m.f of the r.v Y = 2X+3. (A) OFind the p.m.f of the r.v Z = X². (в)
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- statistic discrete rondom variablee Define and explain joint distribution function and joint density function of two random variables X and Y.The probability distribution function of the random variable Y is, y p(y) 0 0.287 1 0.456 2 0.001 3 0.256 Find Hy and Oy - Hy = 2.226,07 =1.123 Hly =1.226, o, = 1.578 a) b) Hy = 2.226,0; = 1.879 Hy =1.226, o; =1.123 c) d)
- Correction: 1b) What is E?eep st A spinner marked off in four equal-sized regions, numbered 8, 9, 10, and 11, is spun twice. Let the random variable X be the higher value resulting from th (or the common value if both spins have the same result.) Complete parts a through d. spi a) Write the probability mass function f(x) = P(X=x) as a set of ordered pairs. How is f(x)= P0X=x) calculated? O A. Divide the number of possible outcomes by the number of outcomes where X =x. O B. Divide the number of possible outcomes by the number of outcomes where X#x. O c. Divide the number of outcomes where X x by the number of possible outcomes. O D. Divide the number of outcomes where X=x by the number of possible outcomes. Choose the correct set of ordered pairs below. O A. ((三) O B. 10, C. 10, 16 O D. Cin ^n b) Find the cumulative probability function F, and draw its graph. Choose the correct cumulative probability function below. C. B. x<8 d x<8 1 x<8 16 8sx<9 16 asx<9 85x<9 16 F(x)= 9sx<10 F(x) = 95x<10 F(x) = < 5 9sx<10 16…Suppose we roll 3 fair dice and let X be the number of twos we roll.(a) Find the probability mass function of X.(b) Find the expected value of X.(c) Find the variance of X.(d) Find the probability-generating function of X.(e) Find the moment-generating function of X
- The probability mass function of a random variable X is given by P(i) = Ck O where i =0,1,2,... where K is some positive value. Find {X=0} A. ec B. ek C. e-e D. e-k A O BO COWhat is the probability that a traveler with $50,000 income chooses to fly if the travel times and cost are the same for both modes? Utility for Car Utility for Air param. t stat Param. t stat Constant 0.63 1.931 0 fixed Travel Time (mins) -0.03 -16.511 -0.03 -16.511 Travel Cost / Income ($/$) -1238.02 -6.834 -1238.02 -6.834Y is a continuous random variable with the probability density function pictured. what is the mean of y?