# Question: Refer to Exercise 10 82 There seem to be two distinct

Refer to Exercise 10.82. There seem to be two distinct rates— those around 12% and those around 70%. Combine the sample data for the first two groups and for the last four groups. Use these data to test the hypotheses H0: π1 – π2 $ 0 versus Ha: π1 – π2, 0. Here, π1 corresponds to the population rate for the first combined group, and π2 is the corresponding proportion for the second combined group. Give the p- value for your test.

In exercise

In exercise

## Answer to relevant Questions

The following data give the observed frequencies of errors per page of unread page proofs for a sample of 40 pages from a certain journal publisher. Errors/ Page Observed Frequencies 0…………………………….. ...Run the Mantel–Haenszel test for the previous data, and interpret your results. Refer to the data of Exercise 11.7. a. Calculate a 95% confidence interval for β0. b. What is the interpretation of H0: β0 = 0 for the problem in Exercise 11.7? c. Test the hypotheses H0: β0 = 0 versus Ha: β0 ≠ 0. d. ...Refer to Exercise 11.18. Conduct a test of the null hypothesis that β1 = 0. Use a = .05. In exercise Refer to Exercise 11.27. a. Compute the value of the F statistic and the associated p- value. b. How do the p- values for this F statistic and the t test of Exercise 11.28 compare? Why should this relation hold? In exercisePost your question