80 printers randomly allocated evenly to 2 treatments: regular paper and cardstock paper5 of the 40 printers using regular paper jam15 of the 40 printers using cardstock paper jamH0: = 0 versus Ha: < 0where pR = the proportion of all printers that jam while printing 2-sided on regular paper, and pC = the proportion of all printers that jam while printing 2-sided on cardstock paperUse .