random sample of 300 students and correlates their practice hours per week with their test scores. The relationship appears linear, the correlation is 0.42 and the p-value=.001. Is the titile the right answer?
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First note that the sample size is very big - 300
Next, a correlation of 0.42 is high, suggesting a causal relationship.
This is confirmed by the p- value 0.001 or only 1 in a thousand chance that the relationship is by chance factors and not real.
The title is therefore correct.
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