In each of the following problems, use the summary statistics and the Tukey confidence intervals to construct the corresponding graph indicating which pairs of means are significantly different and which are not. No work is required.

a) Sample means X1. = 220 X2. = 215 X3. 201 = 211 Difference Confidence interval H1 - H2 (-7.5, 17.5) H1 - P3 (6.5, 31.5) H1 - H4 (-3.5, 21.5) H2 - H3 (1.5, 26.5) H2 - H4 (-8.5, 16.5) H3 - H4 (-22.5, 2.5)\f