# Question: Suppose that 3 balls are chosen without replacement from an

Suppose that 3 balls are chosen without replacement from an urn consisting of 5 white and 8 red balls. Let Xi equal 1 if the ith ball selected is white, and let it equal 0 otherwise. Give the joint probability mass function of

(a) X1, X2;

(b) X1, X2, X3.

(a) X1, X2;

(b) X1, X2, X3.

## Answer to relevant Questions

The joint density of X and Y is given by (a) Are X and Y independent? If, instead, f (x, y) were given by (b) Would X and Y be independent? Suppose that A, B, C, are independent random variables, each being uniformly distributed over (0, 1). (a) What is the joint cumulative distribution function of A, B, C? (b) What is the probability that all of the roots of ...The expected number of typographical errors on a page of a certain magazine is .2. What is the probability that an article of 10 pages contains (a) 0 and (b) 2 or more typographical errors? Explain your reasoning! An insurance company supposes that each person has an accident parameter and that the yearly number of accidents of someone whose accident parameter is λ is Poisson distributed with mean λ. They also suppose that the ...X and Y have joint density function f(x, y) = 1/x2y2 x ≥ 1, y ≥ 1 (a) Compute the joint density function of U = XY, V = X/Y. (b) What are the marginal densities?Post your question