STA 2023 Lecture Notes - Lecture 39: Confidence Interval
Document Summary
Testing the difference between two mean and two proportions. Chapter 9 lecture activity: in 2000, the united nations claimed that there was a higher rate of illiteracy in men than in women from the country of qatar. A humanitarian organization went to qatar to conduct a random sample. The results revealed that 45 out of 234 men and 42 out of 251 women were classified as illiterate on the same measurement test. Use alpha=0. 05 (difference of proportions p1- p2: state the hypotheses and identify the claim. Since 0. 4737>0. 05, we do not reject ho: summarize the results. We do not have enough evidence to reject ho: find a 95% confidence interval for the difference in the proportions of illiteracy in men and women from qatar. We are 95% confidence that there is no difference in illiteracy between men and women since zero is in-between: a total of 23 gossett high school students were admitted to state university.
