In order to use a table of random numbers to draw a simple random sample, the
researcher must
a. serially number the sample elements.
b. specify the parent population distribution.
c. calculate the population variance.
d. serially number the population elements.
e. assume that the central-limit theorem holds for the population in question.
An oral report that includes a graphical presentation should be used
a. as often as possible as it is the best method.
b. to interpret results.
c. to vividly present the research findings.
d. only if graphs serve the purpose better than text or tables.
e. All of the above apply to oral reports with graphical presentations.
Common problems of using lists as sampling frames include
a. the list is not up-to-date.
b. ineligibles are included in the list.