A researcher wanted to determine if a new ad will change voter preference between 3 political parties. The data are below. Conduct the appropriate statistical test using an alpha level of .05 and the eight steps of hypothesis testing. You do not need to conduct post hoc analysis. Previous voting preference proportions Democrat Republican Independent Total .50 .40 .10 1.00 New voting preference based on sample of 100 individuals Democrat Republican Independent Total 55 40 5 100