26. SUPERCOMP, a retail computer store, sells personal computers and printers. The number of computers and printers sold on any given day varies, with the probabilities of the various possible sales outcomes being given by the following table:

107 Number of Computers Sold 0 1 2 3 4 0 .03 .03 .02 .02 °T bbT Number .02 .05 .06 .02 .01 ro a I Itles of 2 .01 .02 .10 .05 .05 of printers 3 .01 .01 .05 .10 .10 elementary