The accompanying summary data on skeletal-muscle CS activity (nmol/min/mg) appeared in the article "Impact of Lifelong Sedentary Behavior on Mitochondrial Function of Mice Skeletal Muscle" (J. of Gerontology, 2009: 927-939):

Carry out a test to decide whether true average activity differs for the three groups. If appropriate, investigate differences amongst the means with a multiple comparisons method?

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Old Old Young Sedentary Active 10 46.68 10 58.24 Sample mean Sample sd 47.71 5.59 8.43