Determine the values of c so that the following functions represent joint probability distributions of the random variables X and Y : (a) f(x, y)=cxy, forx =1 ,2,3; y =1 ,2,3; (b) f(x, y)=c|x−y|, forx = −2,0,2; y = −2,3.

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.