I If We Are Testing for the Difference Between Two

question 38

Multiple Choice

i. If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population. ii. If we are testing for the difference between two population means, it is assumed that the two populations are approximately normal and have equal variances.
iii. When sample sizes are less than 30, a test for the differences between two population means has n - 1 degrees of freedom.

• 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.

Explain Rotter's psychological needs and the concept of freedom of movement.

Compare and contrast Rotter's and Skinner's views on reinforcement and behavior.

Discuss expectancy and reinforcement value in Rotter's theory.

Compare Rotter’s concept of locus of control with Bandura's concept of self-efficacy.

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