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In a study of police gunfire reports during a recent year, it was found that among 500 shots fired by New York City police, 160 hit their targets; and among 280 shots fired by Los Angeles police, 70 hit their targets. We want to use a 0.05 significance level to test the claim that New York City police and Los Angeles police have the same proportion of hits.
Assume population 1 is New York City police gunfire and population 2 is Los Angeles police gunfire. Answer question 8-10:
The test statistic (keep 4 decimals)
Find the p-value (keep 4 decimal places).
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Caselet on McDonald’s vs. Burger King - Waiting time
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Estimate the population mean
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