The estimated standard error of the mean is
a. an estimate of the sampling error
b. a parameter
c. a statistic
d. equal to the range of individual scores, divided by 6
c
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Student's t distribution essentially accounts for the fact that t is often larger than the corresponding z because it is based on estimated variance, which is biased
Indicate whether the statement is true or false
According to psychologist Jeffrey Gray, the brain's ____ system affects sensitivity to rewards, whereas the ____ system affects sensitivity to punishment and the motivation to avoid punishment
a. ?primary; secondary b. ?secondary; primary c. ?behavioral approach; flight or freeze d. ?flight or freeze; behavioral approach
Antipsychotic drugs are used to treat symptoms such as hopelessness, sadness, and thoughts of suicide
Indicate whether the statement is true or false.
Concurrent validity is the extent to which ______.
A. one measure can be differentiated from another measure that it should not be related to B. a measure can distinguish between groups it should be able to distinguish between C. two or more different measures for the same construct are related D. scores obtained by a measure predict the outcomes it should predict