Suppose that X and Y are jointly continuous with joint probability density function fX, Y px, yq " # xe´xp1`yq if x ą 0 and y ą 0, 0 otherwise. (a) Find the marginal density functions of X and Y . (b) Calculate the expectation ErXY s (c) Find the conditional density function of X given Y " y.

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Find two consexutive odd integers such that the sum of their square is 650