Question: A study was conducted to determine the effectiveness of bipolar magnets on pain. Some patients were treated with the magnets and some were treated with simulated magnets. The results are tabulated below. Use a 5% significance level to determine if the reduction in pain is greater when using actual magnets than when using a simulated magnet.

Reduction in pain after magnet treatment: n= 30, x= 0.59, s = 0.76 Reduction in pain after simulated treatment: n= 25, x= 0.48, s =1.1

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