An experiment to compare the spreading rates of five different brands of yellow interior latex paint available in a particular area used 4 gallons (J = 4) of each paint. The sample average spreading rates (ft2 /gal) for the five brands were x̅1. = 462.0, x̅2. = 512.8, x̅3. = 437.5, x̅4. = 469.3, and x̅5. = 532.1. The computed value of F was found to be significant at level a = .05. With MSE = 272.8, use Tukey's procedure to investigate significant differences in the true average spreading rates between brands?