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Your answer is partially correct. The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample

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Your answer is partially correct. The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample standard deviation is s = 0.372. (a) Test the hypothesis Ho: 6 = 0.25 versus H1 : o # 0.25. Use a = 0.05. Reject Ho (b) Find the best upper-bound for the P-value for this test. P-value

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