Question: answer with explanation To study the batteries life spans, 8, 7 and 8 samples are taken from batteries of brand A, B, C, respectively. The

answer with explanation

To study the batteries life spans, 8, 7 and 8 samples are taken from batteries of brand A, B, C, respectively. The sample sizes and sample totals of each brand are summarized in the following table. Given Ex = T, + T2 + 73 and >x2 = 27 ()x), perform an analysis of variance at the 0.05 level of significance and determine whether the mean life spans differ significantly. Brand A Brand B Brand C Sample sizes n1 = 8 n2 = 7 n3 = 8 Sample totals T1 = 210 + 5 T2 = 180 + T3 = 130 + w

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