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6. Identical-mction devices manufactured by Company A and Company B are to be compared. The following sample data are collected for a set of experiments

6. Identical-mction devices manufactured by Company A and Company B are to be compared. The following sample data are collected for a set of experiments under identical conditions: Company Mean Variance 1 00 Must Show All Your Work for Full Marks! Determine the 90% condence interval for the population variances for both companies, and, in less than 20 words, comment on your comparative analysis. [10 marks] Company A

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