EXERCISES AND PROJECTS

Exercise 19-1

You are doing a study in which you are investigating the research hypothesis that approval of government welfare programs for the poor is related to political party identification. A sample survey of 100 respondents has yielded the following observations:

Attitude towards Political Affiliation
welfare programs Democrat Republican Independent
Approve 17 11 12
Disapprove 8 24 8
  1. State the null hypothesis.
  2. Based on the observations, compute the expected frequencies and enter them in the following table.
  3. Compute the value of chi-square.
  4. How many degrees of freedom are there?
  5. At what levels of significance can the null hypothesis be rejected?