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A community college mathematics department experimented with four different delivery methods for their intermediate algebra courses:

Method 1: (traditional lecture),

Method 2: (Online)

Method 3: (hybrid)

Method 4: emporium.

Final exam results are given below. Do the data suggest that any method has a different mean score than the others?

Method 1: 81, 81, 85, 67, 88, 72, 80, 63, 62, 92, 82, 49, 69, 66, 74, 80

Method 2: 85, 53, 80, 75, 64, 39, 60, 61, 83, 66, 75, 66, 90, 93

Method 3: 81, 59, 70, 70, 64, 78, 75, 80, 52, 45, 87, 82, 79

Method 4: 86, 90, 81, 61, 84, 72, 56, 68, 82, 98, 79, 74, 82

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