Question
******** In a study of police gunfire reports during a recent year, it was found that among 490 shots fired by NYC police , 155
******** In a study of police gunfire reports during a recent year, it was found that among 490 shots fired by NYC police , 155 hit their targets; and among 250 shots fired by LA police, 75 hit their targets. We want to use a 0.01 significance level to test the claim that NYC police and LA police have the same proportion of hits.
a) identify the Null and alternative hypotheses.
b) find the value of the test statistic
c) find P-value and then determine the conclusion about the original claim. was it rejected or did it fail to reject.
d) construct a 99% confidence level.
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