Penicillin is produced by the Penicillium fungus, which is grown in a broth whose sugar content must be carefully controlled. Several samples of broth were taken on each of three successive days, and the amount of dissolved sugars (in mg/mL) was measured on each sample. The results were as follows:

Can you conclude that the mean sugar concentration differs among the three days?

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Day 48 5.1 5.1 4.8 5.2 4.9 5.0 4.9 5.0 4.8 4.8 5.1 50 Day 2: 5.4 5.0 5.0 5.1 5.2 5. 5.3 5.2 5.2 5.1 54 5.2 54 Day 3: 5.7 5.1 5.3 5.5 5.3 5.5 5.1 5.6 5.3 5.2 5.5 5.3 54