Whether or not we reject the null hypothesis depends on
a. the probability of the result given the null hypothesis is true.
b. how far the data depart from what we would expect if the null hypothesis were true.
c. the size of some test statistic.
d. all of the above
D
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In class Dr. Heyman discussed research in which children in day care were compared with children on wait lists to be in day care as an example of _______.
a. the problem of research methodologies becoming out of date before a study has been completed b. the problem of generalizing experimental results to natural settings c. the problem of children responding to try to please an experimenter d. a quasi-experimental study
Most girls complete growth in body size by about ______ years of age and most boys by about ______ years of age.
A. 13; 15 B. 16; 16 C. 16; 18 D. 18; 20