Suppose that in the past the standard deviation of weights

Chapter 25, Problem 25.4

(choose chapter or problem)

Suppose that in the past the standard deviation of weights of certain 25.0-oz packages tilled by a machine was 0.4 oz. Test the hypothesiS Ho: u = 0.4 against the alternative HI: U> 0.4 (an undesirable increase). using a sample of 10 packages with ~tandard deviation 0.507 and assuming normality. (Choose a = 5%.)

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