I the Test Statistic T Has N-1 Degrees of Freedom

question 16

Multiple Choice

i. The test statistic t has n-1 degrees of freedom. ii. All t distributions have the same mean of zero and a standard deviation of 1.
iii. The t distribution is more spread out and flatter at the center than is the standard normal distribution. However, as the sample size increases, the t distribution curve approaches the standard normal distribution.

• A) (i), (ii), and (iii) are all correct statements.
• B) (iii) is a correct statement but not (i) or (ii).
• 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:

Need For Cognition

A personality trait that reflects a person's love for engaging in and enjoying thinking.

Self-Monitoring

The extent to which individuals regulate their behavior to accommodate social situations, reflecting on how one's actions are perceived by others.

Promotion Focus

A psychological approach emphasizing the pursuit of goals and aspirations, focusing on potential gains and accomplishments.

Need For Cognition

A personality trait reflecting an individual's desire to engage in and enjoy activities requiring thinking and mental effort.