Populations of Rats Zucker rats are specially bred to have curious weight
properties, related to their genetics (look them up on the Web). You measure 30
lean Zucker rats, obtaining an average weight of 500 grams with a standard
deviation of 50 grams. You measure 20 fatty Zucker rats, obtaining an average
weight of 1000 grams with a standard deviation of 100 grams. Assess the
evidence against the claim that these populations have the same weight.
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