17 The following statistics are computed by sampling from three normal populations whose variances are equal: (You may find it useful to reference the [table and the g table.) 3 1 = 20.8, n1 = 6; 12 = 24.2, n2 = 7; 1 = 29.4, ng = 3; MSE = 32.7 points a. Calculate 95% confidence Intervals for #1 - #2, #1 - M3. and #2 - 3 to test for mean differences with Fisher's LSD approach. (Negative values should be indicated by a minus sign. Round final answers to 2 decimal points.) Book Population Mean Confidence Interval Can we conclude that the Differences population means differ? References H1 - H H2 - Ha b. Repeat the analysis with Tukey's HSD approach. (If the exact value for ny- cis not found in the table. then round down. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Population Mean Can we conclude that the Differences Confidence Interval population means differ? H1 - H2 H1 - H H2 - H3 c. Which of these two approaches would you use to determine whether differences exist between the population means? O Tukey's HSD Method since It protects against an Inflated risk of Type I Error. O Fisher's LSD Method since It protects against an Inflated risk of Type I Error. O Tukey's HSD Method since It ensures that the means are not correlated. O Fisher's LSD Method since It ensures that the means are not correlated