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A component of cholesterol called high-density lipoprotein is known to lower the risk of coronary heart...

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Statistics

A component of cholesterol called high-density lipoprotein isknown to lower the risk of coronary heart disease. It is believedthat runners have increased HDL levels. The following data givedetails of an HDL study comparing male elite runners with a controlgroup of male nonrunners. At the α=0.05, test the claim that youngmale elite runners have a higher population mean HDL level thanyoung male nonrunners.

samplenx̄s
elite runners205612.1
nonrunners724910.5

Answer & Explanation Solved by verified expert
4.0 Ratings (561 Votes)
First we will check whether the two population of elite runners and nonrunners respectively have the same variability in HDL level or not Test for Equal Variances    See Answer
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