Suppose one experimenter decides to test a treatment with only one experimental group and one control group, while another experimenter tests different levels of the same treatment with three different groups of participants
How will this affect the way in which the two experimenters conduct their statistical analysis?
a. this will not make a difference in how they analyze their data
b. the first should use a lower significance level than the second
c. the second should analyze differences in groups means while the first should analyze differences in group variability
d. the first would conduct a t test, while the second would start with an analysis of variance and (if significant) then conduct post hoc tests to determine which groups are significantly different.
D
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Indicate whether the statement is true or false
How are Cabinet secretaries similar to independent agency administrators?
a. Both are appointed by the president. b. Neither can be fired by the president. c. Both typically remain in office over multiple presidential administrations. d. Both are part of the federal civil service system.