What sampling distribution is used to test the null hypothesis for the Pearson correlation coefficient?
a. t distribution with N df
b. t distribution with N â 1 df
c. t distribution with N â 2 df
d. t distribution with N â k df
Answer: c. t distribution with N â 2 df
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According to Hersey and Blanchard’s situational model, effective leaders must
a. adapt their style to fit the needs of the group situation. b. be highly task oriented and socioemotional. c. be more socioemotional than task oriented. d. change the situation to match their leadership style. e. be more task oriented than socioemotional.
Which class of problems involves discovering the relations among the parts of the problem?
a. transformation b. probability c. inducing structure d. arrangement
What information has the Human Genome Project provided to scientists?
A. the function of all the genes in humans B. the function of all the genes in mammals C. the location of all the genes in humans D. the evolutionary past of all the genes in humans
In a 2 X 2 design, an interaction effect occurs when:
a. both independent variables have an effect. b. there are no main effects. c. the effect of one independent variable depends on the level of the other independent variable. d. there is a main effect of one independent variable.