The Sample Correlation Coefficient Between X and Y Is 0

question 16

Multiple Choice

The sample correlation coefficient between X and Y is 0.375. It has been found out that the p-value is 0.744 when testing H₀: ρ = 0 against the one-sided alternative H₁: ρ < 0. To test H₀: ρ = 0 against the two-sided alternative H₁: ρ ≠ 0 at a significance level of 0.1, the p-value is

• A) 0.744/2.
• B) (0.744)(2).
• C) 1 - 0.744.
• D) (1 - 0.744)(2).

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Definitions:

Posttest Scores

The scores obtained from tests administered after an experimental treatment or intervention to evaluate its effects.

Independent Groups Design

A research design in which different groups of participants are exposed to different conditions or levels of the independent variable.

Variable Manipulation

The process of intentionally changing variables to test their effects in an experiment.

Environmental Factors

Aspects of the environment that can affect processes, behaviors, and the performance of individuals or groups.