Ten pairs of points yielded a correlation coefficient r of0.79. If a = 0.05, whi

Question

Ten pairs of points yielded a correlation coefficient r of0.79. If a = 0.05, which of the following statements iscorrect if Ho: p = 0? (Do not calculate a t-value) A) Because 0.79 is greater than 0.632, the null hypothesis isrejected. B) Because 0.79 is greater than 0.602, the null hypothesis isnot rejected. C) There is no correlation between the variables. D) Because 0.79 is greater than 0.632, the null hypothesis isnot rejected. Ten pairs of points yielded a correlation coefficient r of0.79. If a = 0.05, which of the following statements iscorrect if Ho: p = 0? (Do not calculate a t-value) A) Because 0.79 is greater than 0.632, the null hypothesis isrejected. B) Because 0.79 is greater than 0.602, the null hypothesis isnot rejected. C) There is no correlation between the variables. D) Because 0.79 is greater than 0.632, the null hypothesis isnot rejected.

Explanation / Answer

Null: The population correlation is 0. Alternative: The population correlation is not 0. The critical r in this problem is 0.632. Since calculated r = 0.79 is larger than 0.632, then the nullis rejected. Answer: D Hope this helps, Mike

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