A corporate analyst is testing whether mean inventory turnover has increased. Inventory turnover in six randomly chosen product distribution centers (PDCs) is shown. PDC 1 PDC 2 PDC 3 PDC 4 PDC 5 PDC 6 The right-tailed critical value at a = .005 is This Year Last Year 5.1 4.1 3.9 2.9 4.8 2.8 3.4 3.4 4.6 2.6 7.7 4.7 Multiple Choice O 1.479. 4.032. 1.645.

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