Two different rifles are tested at the shooting range. Rifle onewas ï¬red 190 times and the target hit 158 times. Rifle two was shot140 times and the target hit 107 times. Use α = 0.05 for thefollowing.
a. Is it reasonable to conclude therifles are equally accurate? Provide the hypothesis tested, therejection region employed, the statistic calculated, the p-valueand the conclusion reached.
b.  Provide the 95%conï¬dence interval on the difference between the two proportion oftargets hit.
