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Susan suspected that her pet hamster was chubbier than her roommate's hamster. She weighed each critter 20 times on different occasions and found out that

Susan suspected that her pet hamster was chubbier than her roommate's hamster. She weighed each critter 20 times on different occasions and found out that her hamster weighed 250 g on average, whereas her roommate's hamster weighed 160 g on average. What statistical test should she use?

a) z test d) t test for dependent (correlated) samples

b) t test for single sample e) F test (ANOVA)

c) t test for independent (unmatched) samples f) chi-square tes

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