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In the Harris corporation / University of Florida study from Project 2, investigations indicated that all the outliers identified are attributable to a calibration error
In the Harris corporation / University of Florida study from Project 2, investigations indicated that all the outliers identified are attributable to a calibration error in the test device used. As such the remaining voltage measurements are shown below. Old New Location Location 9.98 10.05 10.15 9.19 10.01 8.82 10.26 9.80 10.02 9.63 8.82 8.65 10.05 10.15 9.80 10.10 9.43 8.51 10.29 10.00 9.73 9.70 10.03 9.14 10.03 9.87 10.01 10.09 9.85 9.75 10.26 9.55 9.98 9.60 9.27 8.78 9.97 9.95 9.84 10.05 8.83 9.35 9.87 9.70 10.12 9.39 9.54 10.12 9.84 9.49 9.48 9.36 9.37 9.64 8.68 1. At the 95% confidence level, is there a significant difference between the proportion of measurements greater than 10 volts at the two locations? 2. Construct a 99% confidence interval for estimating the ratio between the two population variances. Is it reasonable to assume equal variances? 3. Based on your conclusion above, is there a significant difference between the two population averages? Use a = 0.01
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