Question 9.35

9.35 What's wrong?

Explain what is wrong with each of the following:

  1. The P-value for a chi-square significance test was .
  2. Expected cell counts are computed under the assumption that the alternative hypothesis is true.
  3. A chi-square test was used to test the alternative hypothesis that there is no association between two categorical variables.

9.35

(a) A -value cannot be negative.
(b) Expected cell counts are computed under the assumption that the null hypothesis is true, not the alternative.
(c) The alternative hypothesis should be that there is an association between two categorical variables.