The following output summarizes the results for a one-way analysis of variance experiment in which the treatments were three different hybrid cars and the variable measured was the miles per gallon (mpg) obtained while driving the same route. (You may find it useful to reference the _q table.) Hybrid 1: 761 = 27, :11 = 20 Hybrid 2: .72 = 33, n2 = 15 Hybrid 3: .73 = 28, n3 = 18 Source of Variation SS df MS F p-Value Between Groups 1,078.01 2 539.01 19.66 0.0000 Within Groups 1,370.49 50 27.41 Total 2,448.50 52 a. At the 5% significance level, can we conclude that average mpg differs between the hybrids? Yes. since the pvalue is less than the signicance level. 0 Yes. since the pvalue is not less than the significance level. 0 No. since the pvalue is less than the signicance level. 0 No. since the pvalue is not less than the significance level. b. Use Tukey's HSD method at the 5% signicance level to determine which hybrids' means differ. (If the exact value for 111- c is 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 C nf' d n Int rv I Can we conclude that the Differences o e ce e 3 hybrids' means differ? #2