9.12 Expected cell counts and the chi-square test. Refer to Exercise 9.11. You consider using the chi-square test to compare these two conditional distributions.

  1. (a) Find the expected counts for all cells. Are they large enough to justify use of the chi-square test for these data?

  2. (b) Computer software gives you X2 = 3.95. What are the degrees of freedom for this statistic?

  3. (c) Using Table F, give an appropriate bound on the P-value.