Normal distributions are an important concept to researchers because ______.
a. they are the basis of statistical techniques designed to test hypotheses
b. researchers typically collect data from entire populations
c. there is only one normal distribution
d. they are neither peaked nor flat
a. they are the basis of statistical techniques designed to test hypotheses
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Name two characteristics of persons with intellectual disabilities that affect learning.
What will be an ideal response?
Which one of the following best characterizes infancy as a developmental period?
a. Fearfulness b. An urge to explore c. Keen memory for day-to-day events d. Minimal brain in the first year growth
The most common drugs used among adolescents include:
a. alcohol b. nicotine c. marijuana, d. inhalants e. all of the above
Identify three selected-response item formats.
What will be an ideal response?