Suppose that in the past the standard deviation of weights of certain 25.0-oz packages
Chapter 25, Problem 25.1.53(choose chapter or problem)
Suppose that in the past the standard deviation of weights of certain 25.0 - oz packages filled by a machine was 0.4 oz. Test the hypothesis \(H_{0}: \sigma=0.4\) against the alternative \(H_{1}: \sigma>0.4\) (an undesirable increase), using a sample of 10 packages with standard deviation 0. 507 and assuming normality. (Choose \(\alpha=5 \%\).)
Text Transcription:
H_{0}: sigma = 0.4
H_{1}: sigma > 0.4
alpha = 5%
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