Question

Pfister, formerly called Price Pfister until 2010, is a manufacturer of bathroom and lavatory faucets, shower systems, showerheads, and accessories and kitchen faucets and other plumbing fixtures. Pfister has instituted a new manufacturing process for assembling a component. Using the old process, the average assembly time was 3.75 minutes per component. A ter he new process was in place or 30。 ays the u tv contro engineer ook a random sam e often componen sand noted he me t 0 k to semble each component. Based on the sample data, the average assembly time was 3.97 minutes, with a standard deviation of.94 minutes. Using a significance level of.02, has the new manufacturing process significantly changed the average assembly time? Do a complete and appropriate hypothesis test. Step 1 (Hypotheses) Ho: (Cliok to select)(Click to select) HA: (Click to select)a(Click to select) Step 2 (Decision rule) Using only the appropriate statistical table in your textbook, the critical value for rejecting Ho is (Click to select) conventional rounding rules) (report your answer to 3 decimal places, using Step 3 (Test statistic) Using the sample data, the calculated value of the test statistic is (Click to select) rules) c)(report your answer to 2 decimal places, using conventional rounding Should the null hypothesis be rejected? (Click to select) Step 5 (Practical conclusion) Has the new manufacturing process significantly changed the average assembly time? (Click to select Using only the appropriate statistical table in your textbook, what is the most accurate statement you can make about the numerical value of the p-value of this hypothesis test? Answer: (provide a one-sentence statement about the p-value)

Answer 1

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