2. A study was conducted of 90 adult male patients following a
new treatment for congestive...
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Advance Math
2. A study was conducted of 90 adult male patients following anew treatment for congestive heart failure. One of the variablesmeasured on the patients was the increase in exercise capacity (inminutes) over a 4-week treatment period. The previous treatmentregime had produced an av- erage increase of 2 minutes. Theresearchers wanted to evaluate whether the new treatment hadincreased the value of ? in comparison to the previous treatment.The data yielded y = 2.35 minutes and s = 1.05.
(a) What type of confidence interval are you going to performfor this data? Justify your answer.
(b) Calculate and interpret a 99% CI for the true meanincrease in exercise capacity (in min- utes).
(c) Using your interval, does the new treatment increase theexercise capacity when compared to the mean of the previoustreatment?
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SOLUTIONGiven That data A study was conducted of 90 adult malepatients following a new treatment
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