The sample correlation coefficient between X and Y is 0.375. It has been found out that the p- value is 0.256 when testing H₀ : ? = 0 against the two- sided alternative H₀: ?? 0. To test H₀ :? = 0 against the one- sided alternative H0 : ? 0 at a significance level of 0.2, the p- value is A) (0.256)2. B) 1 - 0.256/2. C) 0.256/2. D) 1 - 0.256.

Question

The sample correlation coefficient between X and Y is 0.375. It has been found out that the p- value is 0.256 when testing H₀ : ? = 0 against the two- sided alternative H₀: ?? 0. To test H₀ :? = 0 against the one- sided alternative H0 : ? > 0 at a significance level of 0.2, the p- value is A) (0.256)2. B) 1 - 0.256/2. C) 0.256/2. D) 1 - 0.256.

Quizplus · Accepted Answer

For a one-sided test, the p-value is half of the two-sided p-value.

The Sample Correlation Coefficient Between X and Y Is 0