An archeologist finds some humeri (leg bones) that may be from prehistoric bison or may be from modern cows  She  knows that modern cow humeri length averages 32 cm with a standard deviation of 4cm  The sample of 7 unknown humeri she found has an average length of 35 cm  If they are significantly longer than modern cow humeri they are likely from prehistoric bison  Based on your analysis are the bones modern or prehistoric?

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