I a T Test Is Used to Test the Significance $\rho$

question 127

Multiple Choice

i. A t test is used to test the significance of the coefficient of correlation. ii. When testing the strength of the relationship between two variables, the alternate hypothesis is: H₀: $\rho$ > 0.
iii. Perfect correlation means that the scatter diagram will appear as a straight line

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Sleep Deprivation

The condition of not having enough sleep, which can adversely affect health, cognitive functions, and emotional well-being.

Replication

Repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances.

Representative

Serving as a typical or characteristic example of a group, concept, or category.

Random Sample

A sample that fairly represents a population because each member has an equal chance of inclusion.