Chapter 10, Problem 10.4P

$\boxed{SOC}$ A sample of 25 cities have been classified as high or low on their homicide rates and on the number of handguns sold within the city limits.

a. Is there a relationship between these variables? Do cities with higher homicide rates have significantly higher handgun sales? Explain your results in a sentence or two, citing both the results of the chi square test and the patterns of the column percentages.

b. The table is constructed assuming that homicide rate is the independent variable (“higher homicide rates cause people to buy more guns”). Can you think of an argument that would make handgun sales the independent variable? Which is the more logical argument? Why?

Volume of Handgun Sales	Homicide Rate
	Low	High	Totals
High	8	5	13
Low Totals	$\frac{4}{12}$	$\frac{8}{13}$	$\frac{12}{25}$