A cannery prints “weight 454 grams” on its label. The quality control supervisor selects nine cans at random and weighs them. He finds ???? = 445 and…

A cannery prints “weight 454 grams” on its label. The quality control supervisor selects nine cans at random and weighs them. He finds ????̅ = 445 and ???? = 14.2. Do the data present sufficient evidence to indicate that the mean weight is less than that claimed on the label? Test using α = 0.05 by applying both p-value approach and critical value approach.

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