When conducting a t test of related measures for a two-tailed test, we can reject the null hypothesis when _____
a. the obtained t > the critical t c. the obtained t < the critical t
b. the obtained t = the critical t d. all of these
A
The obtained t must be greater than the critical t in order to reject the null hypothesis.
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Which of the following sets of data would produce the largest value for Cohen's d?
a. n = 10 for both samples, a pooled variance of 15, and a mean difference of 3 points b. n = 20 for both samples, a pooled variance of 15, and a mean difference of 5 points c. n = 10 for both samples, a pooled variance of 20, and a mean difference of 3 points d. n = 20 for both samples, a pooled variance of 20, and a mead difference of 5 points
What are the two characteristics of neuroses that are linked to the stage of toddlerhood?
a. Withdrawal and depression b. Hysteria and phobia c. Regression and denial d. Obsessions and compulsions
A researcher manipulates the ______________________ in order to see its effect.
Fill in the blank(s) with the appropriate word(s).
Joy and Cory were walking to a night club when a robber held them up and took their wallets. When asked to identify suspects in a line-up, Joy is able to identify the robber but Cory is not. If Joy and the robber are both of the same race and Cory is not, ______ would best explain Joy’s accuracy and ______ would explain Cory’s inability to.
a. own-gender bias; cross-gender identification b. weapon focus; own-race bias c. own-race bias; cross-race identification d. weapon focus; numbing effect