A researcher obtained a sample of 180 participants between, Ask an Expert

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A researcher obtained a sample of 180 participants between the ages of 18 and 24 and calculated the phi coefficient between whether they smoked cigarettes and whether they used marijuana (yes vs. no).

Because the correlation between smoking and marijuana use was .45, the researcher concluded that curette smoking leads to marijuana use. Do you agree with the researcher's conclusion? Explain your answer.

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