The Computer Anxiety Rating Scale (CARS) measures an individual's level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there are differences in the amount of computer anxiety experienced by students with different majors. They found the following:

a. Complete the ANOVA summary table.
b. At the 0.05 level of significance, is there evidence of a difference in the mean computer anxiety experienced by different majors?
c. If the results in (b) indicate that it is appropriate, use the Tukey-Kramer procedure to determine which majors differ in mean computer anxiety. Discuss your findings.

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Degrees of Sum of Mean Freedom Squares Squares F Source Among majors Within majors Total 3,172 21,246 24,418 166 Major Mean Marketing Management Other Finance Accountancy MIS 44.37 43.18 42.21 41.80 37.56 32.21 19 14 45 36