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9.2 Problems 9.3. a. Use the data given to test the following hypotheses. Ho : = 25 x=28.1, n = 57 Ha 25 =

9.2 Problems 9.3. a. Use the data given to test the following hypotheses. Ho : = 25 x=28.1, n = 57 Ha 25 = 8.46, = .01 b. Use the p-value to reach a statistical conclusion. c. Using the critical value method, what are the critical sample mean values?

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