Contracts for two construction jobs are randomly assigned to one or more of three firms. A, B, and C. The joint distribution of X, the number of contracts awarded to firm A, and Y, the number of contracts awarded to firm B, is given by the entries in the following table: Y X 0 1 2 0 1/9 2/9 1/9 1 2/9 2/9 0 2 1/9 0 0 a) Calculate P(X<2, Y<2) b) Find the marginal probability distribution of the random variables X and Y c) Determine whether the random variables X and Y are independent d) Find the conditional density functions p(x|y=1) and p(x|y=0) e) Calculate the expected value of XY f) Find the covariance of X and Y g) Find the correlation coefficent of X and Y
Contracts for two construction jobs are randomly assigned to one or more of three firms. A, B, and C. The joint distribution of X, the number of contracts awarded to firm A, and Y, the number of contracts awarded to firm B, is given by the entries in the following table: Y X 0 1 2 0 1/9 2/9 1/9 1 2/9 2/9 0 2 1/9 0 0 a) Calculate P(X<2, Y<2) b) Find the marginal probability distribution of the random variables X and Y c) Determine whether the random variables X and Y are independent d) Find the conditional density functions p(x|y=1) and p(x|y=0) e) Calculate the expected value of XY f) Find the covariance of X and Y g) Find the correlation coefficent of X and Y
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Contracts for two construction jobs are randomly assigned to one or more of three firms. A, B, and C. The joint distribution of X, the number of contracts awarded to firm A, and Y, the number of contracts awarded to firm B, is given by the entries in the following table:
Y | |||
X | 0 | 1 | 2 |
0 | 1/9 | 2/9 | 1/9 |
1 | 2/9 | 2/9 | 0 |
2 | 1/9 | 0 | 0 |
a) Calculate P(X<2, Y<2)
b) Find the marginal probability distribution of the random variables X and Y
c) Determine whether the random variables X and Y are independent
d) Find the conditional density
e) Calculate the
f) Find the
g) Find the
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