14 (7 points) Test if means are different at 5% significance level: 1. Hypotheses? 2. Build Test Statistic (Sample variances are provided... i.e., do not square the numbers given) = 3. Use Critical Value Approach: 4. Decision? Question 14 options: a) Cannot Reject Ho, none of the means differ b) Cannot Reject Ho, at least one mean differs c) Reject Ho, at least one mean differs d) Reject Ho, none of the means differ