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5 21 A study was conducted of 90 adult male patients following a new treatment...

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5 21 A study was conducted of 90 adult male patients following a new treatment for congestive heart failure One of the variables measured on the patients was the increase in exercise capacity in minutes over a 4 week treatment period The previous treatment regime had produced an average increase of 2 minutes The researchers wanted to evaluate whether the new treatment had increased the value of in comparison to the previous treatment The data yielded y 2 17 and s 1 05 a Using a 05 what conclusions can you draw about the research hypothesis b What is the probability of making a Type II error if the actual value of is 2 1

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