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Forever Power Company analysts conducted tests on the life of its batteries and those of a competitor (Brand X). They found t

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Solny Given, Mean life of forever Power batteries 2.606 is Standard deviation of forever Power batterice is 4.3 Given, Observb*. Calculation of xi - Mean . Standar deviation of Brand X. (x - mean.) 2 13-25.5 - 12.5 18-25155 - 7.5 19 - 25.5= -6.5 23 -Date Page - (b) Since eleviation of forever Standard eleviation Power batteries is less than . the Brand X Batteries. Auss Th

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