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A Harris corporation I University of Florida stud}.r was Undertaken to determine whether a manufacturing process performed at a remote location can be established locally.

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A Harris corporation I University of Florida stud}.r was Undertaken to determine whether a manufacturing process performed at a remote location can be established locally. Test devices were set up at both the old and new locations and voltage readings on the process were obtained. The table below contains voltage readings (in 1000 Volts} after the investigation. Old New Location Location 9.93 10.12 9.34 9.19 10.01 3.32 10.26 10.05 10.15 9.63 3.32 3.65 10.05 9.30 10.02 10.10 9.43 3.51 10.29 10.15 9.30 9.70 10.03 9.14 10.03 10.00 9.23 10.09 9.35 9.25 10.55 9.55 9.93 10.05 9.33 9.35 10.26 9.95 10.12 9.39 9.54 9.911 9.?0 9.49 9.43 9.36 9.311 9.34 9.3'1ll 9.154 3.33 1. Is it reasonable to assume that the voltage readings at each location are approximately normal? [Use all descriptive methods) 2. Construct a 99% condence interval for estimating the ratio between the two population variances. Is it reasonable to assume equal variances? 3. Based on your conclusion above1 test the claim that the average voltage at the old location exceeds that at the new location by at least 500 volts. Use at = 1%

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