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A medical researcher wants to determine if there is a difference in mean length of time it takes different pain relievers to provide relief to

A medical researcher wants to determine if there is a difference in mean length of time it takes different pain relievers to provide relief to migraine pain. Is there enough evidence to conclude that the mean times are different? If so, perform a Scheffe Test to determine what groups have different mean time.

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Medication 1 Medication 2 Medication 3 16 18 14 27 20 12 22 19

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