The data shown in Table 6.34 are times in months before the paint started to peel for four brands of paint applied to a set of test panels. If all paints cost the same, can you make recommendations on which paint to use? This problem is an example of a relatively rare situationwhere only themeans and variances are provided. For computing the between group sum of squares, simply compute the appropriate totals. For the within sum of squares, remember that SSi = (ni−1)s2i

, and SSW = SSi.

Table 6.34 Data for Exercise 8 Number Paint of Panels y¯ s2 A 6 48.6 82.7 B 6 51.2 77.9 C 6 60.1 91.0 D 6 55.2 105.2

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