A concerned group of citizens wanted to know if the proportion of armed robberies in Texas was different in 2011 than in 2010. Their research showed that of the 113,231 violent crimes in Texas in 2010, 7,622 of them were armed robberies. In 2011, 7,439 of the 104,873 violent crimes were in the armed robbery category. Test at a 5% significance level. Required:
a. The null and alternative hypothesis would be:
b. Determine the test statistic.
c. Find the p-value and round to 4 decimals.
d. Write the conclusion.