What is the independent variable? At what level is the independent variable measured at? What is the dependent variable?At what level is the dependent variable measured at?At what level is the variable 'officers preference' measured?

You and the members of your committee send out a simple survey asking each officer to indicate which of the three models he or she prefers. This survey indicates the following. Percent of Vehicles officer preference The Dodge Charger 45% The Chevrolet Tahoe 42% The Ford Interceptor 13% Totals 100% Given the closeness of officer preference between the Dodge Charger and Chevrolet Tahoe it will be important now to determine whether the differences in preference are statistically significant, i.e. not due to chance. You start with a hypothesis. Hypothesis: The difference in officer preference between the Dodge Charger and Chevrolet Tahoe is statistically significant