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Two different rifles are tested at the shooting range. Rifle one was fired 190 times and...

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Statistics

Two different rifles are tested at the shooting range. Rifle onewas fired 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%confidence interval on the difference between the two proportion oftargets hit.

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