For which of the following situations would a paired-sample research design be appropriate? Comparing verbal reasoning skills 80 years olds to 18 years olds. ​Comparing mathematical skills for girls versus boys at age 10 ​Comparing self-esteem for students who participate in school athletics versus those who do not ​Comparing pain tolerance in patients before and after acupuncture.

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A: Introduction: It is required to identify the correct option.

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A: Lower bound=-5.400 Upeer bound =1.670

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