Mathematics, 05.05.2020 07:42, katherineweightman
Rylan is testing 2 different types of nail polish on her fingernails to determine which one lasts longer. She purchases Brand A and Brand B from the drug store. She then paints her nails with Brand A and her sister's nails with Brand B. She compares the nail polish at the end of the week and determines that Brand B lasts longer because there are fewer chips than Brand A. Why is her conclusion not valid?
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Rylan is testing 2 different types of nail polish on her fingernails to determine which one lasts lo...
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