25 Overlap of Confidence Intervals In the article On Judging

Last updated: 2/24/2023

25 Overlap of Confidence Intervals In the article On Judging the Significance of Differ ences by Examining the Overlap Between Confidence Intervals by Schenker and Gentleman American Statistician Vol 55 No 3 the authors consider sample data in this statement Independent simple random samples each of size 200 have been drawn and 112 people in the first sample have the attribute whereas 88 people in the second sample have the attribute a Use the methods of this section to construct a 95 confidence interval estimate of the differ ence P P What does the result suggest about the equality of p and p b Use the methods of Section 7 1 to construct individual 95 confidence interval estimates for each of the two population proportions After comparing the overlap between the two confi dence intervals what do you conclude about the equality of p and p c Use a 0 05 significance level to test the claim that the two population proportions are equal What do you conclude d Based on the preceding results what should you conclude about the equality of p and p Which of the three preceding methods is least effective in testing for the equality of p and p