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ons Problem 8-24 Algo (Confidence Interval for the Difference between Means) ellook Question 5 of 15 Check My Work A company employs two shifts
ons Problem 8-24 Algo (Confidence Interval for the Difference between Means) ellook Question 5 of 15 Check My Work A company employs two shifts of workers. Each shift produces a type of gasket where the thickness is the critical dimension. The average thickness and the standard deviation of thickness for shift 1, based on a random sample of 37 gaskets, are 10.36 mm and 0.14 mm. The similar figures for shift 2, based on a random sample of 28 gaskets, are 10.38 mm and 0.17 mm. Let 1-2 be the mean difference in thickness between shifts 1 and 2. 1-2. Round your answers to three decimal places, if necessary." a. Calculate a 95% confidence interval for Lower limit Upper limit -0.099 0.059 4 b. Based on your answer to part a, are you convinced that the gaskets from shift 2 are, on average, wider than those from shift 17 Probably, not. Explain. Because the confidence interval extends from a negative v value to a positive value, the population mean difference could be positive c. How would your answers to parts a and b change if the sample sizes were instead 370 and 280? We are most likely convinced that the gaskets from shift 2 are, on average, wider than those from shit 1. Hide Feedback Partially Correct Check My Work Feedback Click here for a video walkthi adam
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