Objective: There is thought among some people at your facility that the old method and the...
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Objective: There is thought among some people at your facility that the old method and the new method are producing product at different thicknesses. You DO NOT WANT the methods to be different. In fact, you want the methods to be producing products that have the same average. If the method averages are significantly different, you have a problem! To address this, you suggest using a T test. If the null is NOT rejected--that is good news! The team agrees that a sample size of 25 is adequate for the sample from the new process for this test. You already know the mean for the old process, which is 0.0126. The team decides to use a significance level of 0.05 for the test. Instructions for you: Step 1: State the null and alternative hypotheses Step 2: Gather the required information Step 3: Calculate the t-test statistic (round to 6 decimal places) Step 4: Determine the critical t value Step 5: State the statistical conclusion Step 6: State the practical conclusion Data: New method Hint Hint Hint Hint Hint Hint 0.009 0.010 0.011 0.011 0.010 0.011 0.011 0.013 0.008 0.012 Objective: There is thought among some people at your facility that the old method and the new method are producing product at different thicknesses. You DO NOT WANT the methods to be different. In fact, you want the methods to be producing products that have the same average. If the method averages are significantly different, you have a problem! To address this, you suggest using a T test. If the null is NOT rejected--that is good news! The team agrees that a sample size of 25 is adequate for the sample from the new process for this test. You already know the mean for the old process, which is 0.0126. The team decides to use a significance level of 0.05 for the test. Instructions for you: Step 1: State the null and alternative hypotheses Step 2: Gather the required information Step 3: Calculate the t-test statistic (round to 6 decimal places) Step 4: Determine the critical t value Step 5: State the statistical conclusion Step 6: State the practical conclusion Data: New method Hint Hint Hint Hint Hint Hint 0.009 0.010 0.011 0.011 0.010 0.011 0.011 0.013 0.008 0.012
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