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A psychologist investigates if the average reaction time differs between two age groups.
Group 1 (20-30 years): \(n_1 = 15, \bar{x}_1 = 0.35s, s_1 = 0.05s\)
Group 2 (50-60 years): \(n_2 = 15, \bar{x}_2 = 0.40s, s_2 = 0.06s\)
Test at the \(1\pourcent\) level if there is a difference in reaction times.
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