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4. Data from two independent normal random samples are shown below: Sample 1 5.8 5.1 3.9 4.5 5.4 Sample 2 4.4 6.1 5.2 5.7 Assume

4. Data from two independent normal random samples are shown below: Sample 1 5.8 5.1 3.9 4.5 5.4 Sample 2 4.4 6.1 5.2 5.7 Assume the population variances are identical but unknown. a. Test #1

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