In a February 2013 Quinnipiac University poll the following question about a typical practice of the New York Police Department was asked to a random sample of New York City voters: €œAs you may know, there is a police practice known as €˜stop and frisk€™, where police stop and question a person they suspect of wrongdoing and, if necessary search that person. Do you approve or disapprove of this police practice?€ The results from the poll are shown in the following table by age groups.

a. What proportion in each age category approves of stop and frisk?

b. Does there seem to be an association with age and whether or not someone approves of stop and frisk? If so, describe the association.
c. Write out the null and alternative hypotheses for this study.
d. The table for these results can be found in the file FriskAge. Put that table in the Multiple Proportions applet (make sure you click on Use Table). What is the value of the MAD statistic?

e. Do at least 1,000 repetitions and find a p-value.

f. Based on your p-value, do you have strong evidence that there is an association between age and whether or not someone approves of the stop and frisk practice?

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Age 18–34 Total 35-54 55+ Approve 173 68 68 128 369 Disapprove 165 533 204 164 Total 332 338 232 902