Math Quiz 12.3, 4 and 5 Flashcards
Five of each brand failed after the number of months shown. Calculate a) both sample means and b) both sample standard deviations. Decide c) which brand battery lasts longer and d) which brand has the more consistent lifetime. Brand A: 73, 68, 73, 70, 67 Brand B: 67, 64, 63, 64, 65
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