This provides us with the difference between sample means minus the expected population mean difference for the null hypothesis, divided by the estimated standard error.
A. one-way ANOVA
B. independent samples t-test
C. pooled variance
D. Levine's test
Answer: B
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A within-participants study randomly orders which condition of the independent variable comes first. This is likely an attempt to compensate for what?
A. lack of control group B. order effects C. reduced variability of participants D. random assignment
In a well-designed between-subjects experiment, the participants would
a. Be assigned to conditions depending upon their gender b. Be randomly allocated to conditions c. Experience each condition at least once d. Take a pre-test prior to allocation to groups
What do persuasive communicators usually have a good deal of?
a. expertise c. trustworthiness b. attractiveness d. all of these
When discussing his relationship with his wife Amber, Travis says, "I have this very strong sense of commitment and tranquility." Researchers have suggested that the neurophysiological basis of this feeling may be due to brain chemicals related to:
A. cocaine. B. morphine. C. alcohol. D. cannabis.