On a television show, a physician draws a blood sample to be used to determine if a patient has a virus. This segment immediately reminds you of a concept discussed in your psychology class. Of the following concepts,
which one is most accurately illustrated by this television segment?
a) law of parsimony
b) extraneous variables
c) reactive observations
d) representative sample
ANS: d
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Obsessive-compulsive disorder appears to be linked to the area of the brain called the __________________. The implications of this finding are that__________________.
a. orbital frontal cortex; although the disorder is related to a particular brain circuit, the causes of the disorder are not necessarily completely biological b. orbital frontal cortex; the disorder is probably due only to brain damage in this area c. occipital lobe; although the disorder is related to a particular brain circuit, the disorder causes the abnormalities in the brain d. occipital lobe; the disorder is most likely due to purely psychological causes
What is true about the sample mean?
A. It is used in a t-test. B. It is used in a z-test. C. Both are correct. D. Both are incorrect