Can someone help me with the problem listed below:

A random sample of students is interviewed to determine if there is an association between class and attitude toward corporations? With the following results, test the hypothesis that there is no difference among students on this attitude.

Favorable Neutral Unfavorable
Freshmen 100 50 70
Sophomores 80 60 70
Juniors 50 50 80
Seniors 40 60 90

I couldn't get the formatting correct so I have attached the problem in a word document.

Thanks for you help.

Hi Twill,

Have you tried Bill Miller's excellent freeware program OpenStat? It may be downloaded from www.statpages.org/miller/openstat.

Input data with Class coded 1,2,3,4 and Attitude coded 1,2,3. Run Chi-square Test under Analyses -> Nonparametric and this is what OpenStat will give you:
----------------------------------------------------------------------------------------
Chi-square Analysis Results for Class and Attitude
No. of Cases = 800

Chi-square = 33.614 with D.F. = 6. Prob. > value = 0.000

Liklihood Ratio = 34.232 with prob. > value = 0.0000

phi correlation = 0.2050

Pearson Correlation r = 0.1867

Mantel-Haenszel Test of Linear Association = 27.836 with probability > value = 0.0000

The coefficient of contingency = 0.201

Cramer's V = 0.145

-------------------------------------------------------------------------------------
Hope this helps.