The null hypothesis for a two-tailed independent-groups t test states that
a. H0: m1 ¹ m2
b. H0: m1 = m2.
c. Ha: m1 ¹ m2.
d. Ha: m1 = m2.
b
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The vertical line in the center of a box plot
a. represents the sample mean. b. represents the sample median. c. serves to anchor the box. d. can represent anything you want it to.
Learning what not to do by observing someone else is called _______________
Fill in the blank(s) with correct word
A reversal design involves ______.
A. removing the manipulation and returning to baseline B. adding the opposite manipulation C. adding a new manipulation D. omitting the initial baseline phase
Adults with severe autism spectrum disorder may represent a vulnerable population and are therefore protected under certain ethical principles guiding psychological research. As such
A. they can provide informed consent, and also extra care must be taken to protect their privacy and confidentiality. B. they cannot provide informed consent, and so they cannot participate in psychological research. C. they can provide informed consent, and also permission must be obtained from a biological parent. D. they cannot provide informed consent, and so permission must be obtained from a legal guardian.