Repeat exercise 11, An experiment to compare the spreading rates of five different brands of yellow interior
Question:
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?
Suppose x̅3. = 427.5. Now which true average spreading rates differ significantly from one another? Be sure to use the method of underscoring to illustrate your conclusions, and write a paragraph summarizing your results.
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Brands 2 and 5 do not differ significantly from one anot...View the full answer
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Related Book For 
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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