# Question

With reference to Exercise 3.42 on page 90, find the covariance of X and Y.

## Answer to relevant Questions

With reference to Example 3.22 on page 94, find the covariance of X1 and X3. Express var(X + Y), var(X – Y), and cov(X + Y, X – Y) in terms of the variances and covariance of X and Y. (a) Show that the conditional distribution function of the continuous random variable X, given a< X F b, is given by (b) Differentiate the result of part (a) with respect to x to find the conditional probability density of X ...With reference to Example 4.1, find the variance of the number of television sets with white cords. Example 4.1 A lot of 12 television sets includes 2 with white cords. If 3 of the sets are chosen at random for shipment to a ...Find the expected value of the random variable X whose probability density is given byPost your question

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