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Mathematics, 14.07.2020 02:01 yam44

The standard deviation in the pressure required to open a certain valve is known to be sigma equals 0.6 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has been reduced. (a) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (c) Explain what it would mean to make a Type II error.

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