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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