Question: A study was recently conducted to see whether the mean starting salaries for graduates of engineering, business, healthcare, and computer information systems majors differ. A

A study was recently conducted to see whether the mean starting salaries for graduates of

engineering, business, healthcare, and computer information systems majors differ. A random

sample of 8 graduates was selected from each major. The following shows the results of the

ANOVA computations. However, the degrees of freedom column has been omitted. The correct

number of degrees of freedom for the within variation is 28.

Anova: Single Factor

SUMMARY

Groups Count Sum Average Variance

Engineering 8 321597.9 40199.73 22134520

Business 8 291780.4 36472.55 13610531

Healthcare 8 268492.3 33561.54 10827315

CIS 8 334347.9 41793.49 6229097

ANOVA

Source of Variation SS df MS F P-value F crit

Between Groups 330097957.7 1.1E+08 8.335576 0.000406 2.946685

Within Groups 369610240.6 13200366

Total 699708198.3

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