The U S Senate just passed a bill by a vote of 5545 (with all 100 senators voting) A student who took an elementary statistics course last semester says, We can use these data to make a confidence interval about p We have n 100 and p Igrave 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 students reasoning ( 55)(45) V100 55 098 452 to 648 p zrp 55 1 96

Question: The U.S. Senate just passed a bill by a vote of 5545 (with all 100 senators voting). A student who took an elementary statistics course

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?

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

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