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

Two diﬀerent riﬂes are tested at the shooting range. Riﬂe one was ﬁred 190 times and the target hit 158 times. Riﬂe two was shot 140 times and the target hit 107 times. Use α = 0.05 for the following.

a. Is it reasonable to conclude the riﬂes are equally accurate? Provide the hypothesis tested, the rejection region employed, the statistic calculated, the p-value and the conclusion reached.

b. Provide the 95% conﬁdence interval on the diﬀerence between the two proportion of targets hit.

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Expert Solution

orchestra answered 1 year ago

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