The Student's t-test is typically used
a. in comparing two groups to see if their means differ.
b. when analyzing the results of a factorial design.
c. as a followup to designs using logistic regression.
d. in place of the correlation coefficient.
Question 2
De Fockert et al. (2011) found that, compared to Western research participants, rural Namibian research participants responded more slowly to particular visual displays but were less affected by distracting elements of the displays.
We cannot be certain that cultural background is the reason for the difference in behavior because
a. the groups differed in many ways other than cultural background.
b. the researchers ignored cultural norms in their interpretations.
c. language differences posed a barrier in communicating about the visual displays.
d. the researchers used random rather than systematic assignment.
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