An accounting firm, prior to introducing in the firm widespread training in statistical sampling for auditing, tested three training methods: (1) study at home with programmed training materials, (2) training sessions at local offices conducted by local staff, and (3) training session in Detroit conducted by a national staff. Thirty officers were grouped into ten blocks of three, according to time elapsed since college graduation, and the auditors in each block were randomly assigned to the three training methods. At the end of the training, each auditor was asked to analyze a complex case involving statistical applications; a proficiency measure based on this analysis was obtained for each auditor. The observations were entered into Minitab, which produced the following output. Please conduct an appropriate number of hypotheses tests, using a level of significance of .05.
Refer to exhibit 7. What type of experimental design was used, and how many hypothesis tests should be conducted?
Select one:
a.
Randomized Block Design, only 1 hypothesis test should be conducted
b.
Completely Randomized Design, only 1 hypothesis test should be conducted
c.
Two Way ANOVA with interaction, only 1 hypothesis test should be conducted
d.
t test for a difference between the means
e.
Randomized Block Design, 2 hypothesis tests should be conducted