The U.S. Senate just passed a bill by a vote of 55€“45 (with all 100 senators voting). A student who took an elementary statistics course last semester says, €œWe can use these data to make a confidence interval about p. We have n = 100 and pÌ‚ = 55/100 = .55.€ Hence, according to him, a 95% confidence interval for p is

Does this make sense? If not, what is wrong with the student€™s reasoning?

Transcribed Image Text:

(.55)(45) V100 = .55 ± .098 = .452 to .648 p ± zrp_ .55 + 1.96