Show all work and answer all questions on a separate sheet of paper. Make sure you label your problem numbers and letters. StatCrunch can be used to check answers but not to find them unless it is stated that StatCrunch is allowed. 8. For each situation decide if you should use the Z, t or x2 table to find the critical value. a] You want to do hypothesis testing on the claim: [4 > 56 bl You want to do a confidence interval on the proportion of adults who don't drive. c] You want to do hypothesis testing on the claim: J at 12.4 d] You want to do a confidence interval on the average age of a college student. e} You want to do a confidence interval on the variance of number of emails