The standard deviation in the pressure required to open a certain valve is known to be o = 1.1 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure...

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Extracted text: The standard deviation in the pressure required to open a certain valve is known to be o = 1.1 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased. (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 Il error. .... . (a) State the hypotheses. Ho: (Type integers or decimals. Do not round.) (b) Which of the following is a Type I error? A. The manager rejects the hypothesis that the pressure variability is 1.1, when it is the true pressure variability. B. The manager fails to reject the hypothesis that the pressure variability is 1.1, when the true pressure variability is greater than 1.1. C. The manager rejects the hypothesis that the pressure variability is 1.1, when the true pressure variability is greater than 1.1. D. The manager fails to reject the hypothesis that the pressure variability is 1.1, when it is the true pressure variability. (c) Which of the following is a Type Il error? A. The manager rejects the hypothesis that the pressure variability is 1.1, when it is the true pressure variability. B. The manager rejects the hypothesis that the pressure variability is 1.1, when the true pressure variability is greater than 1.1. C. The manager fails to reject the hypothesis that the pressure variability is 1.1, when the true pressure variability is greater than 1.1. D. The manager fails to reject the hypothesis that the pressure variability is 1.1, when it is the true pressure variability.