Wednesday
November 26, 2014

Homework Help: statistics

Posted by GG on Thursday, October 21, 2010 at 3:31pm.

The Computer Anxiety Rating Scale (CARS) measures an individuals 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.

Source Degree of freedom Sum of Square Mean Square(Variance) F
_____________________________________________________________________________
Among majors 5 3,172
Within majors 166 21,246
________ _________
Total 171 24,418


Major n Mean
_______________________________________________________________________________
Marketing 19 44.37
Management 11 43.18
Other 14 42.21
Finance 45 41.80
Accountancy 36 37.56
MIS 47 32.21



(a). Complete the ANOVA summary table
(b). At 0.05 level of significance, is there evidence of 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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