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Rae is conducting an experiment that randomly assigns individuals to a nature walking intervention or a...

Rae is conducting an experiment that randomly assigns individuals to a nature walking intervention or a control group to examine the effect on blood pressure. Which of the following would be a threat to internal validity?

. a. sampling by non-probability methods

b. some individuals in the control also walk frequently

c. choice of statistical methods

d. relatively small sample size

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Answer #1

Answer .A.when we do experiment we should consider proper methods otherwise it gives wrong data.so A is the answer.

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Rae is conducting an experiment that randomly assigns individuals to a nature walking intervention or a control group to examine the effect on blood pressure. Which of the following would be a threat to internal validity?


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