Question: Three catalysts are used in a chemical process with a control (no catalyst) being included. The following are yield data from the process. Use Dunnett's

Three catalysts are used in a chemical process with a control (no catalyst) being included. The following are yield data from the process. Use Dunnett's test at ? = 0.01 level of significance to determine if a significantly higher yield is obtained with the catalysts than with no catalyst. Catalyst 1 2 3 Control 74.5 76.1 75.9 77.5 81.5 82.0 82.3

Catalyst 1 2 3 Control 74.5 76.1 75.9 77.5 81.5 82.0 82.3 80.2 80.6 81.4 81.5 79.5 83.0 83.0 78.1 84.9 78.1 76.2 81.0 82.1

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