A new antibiotic may reduce the average number of days that it takes to recover from a sinus infection. Five patients were randomly selected to get the new drug, while the other 6 patients received the old drug. Which Data Analysis Tool should you use? F a ttest: Paired r b t test: Two Sample for Means r C t test: Two Sample for r d z . Two Sample for . Assuming Unequal Variances . Means Assuming . test Means Equal Variances