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To determine whether a certain additive prolongs the life of batteries, 2n batteries are divided into a centre] and treatment group of n each. State

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To determine whether a certain additive prolongs the life of batteries, 2n batteries are divided into a centre] and treatment group of n each. State for what values of W3 you would reject the hypothesis of no treatment effect at the closest attainable signicance level which does not exceed 0.1]2 when 1128

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