An SRS of 450 high school seniors gained an average of x = 44 points in their second attempt at the SAT Mathematics exam
Posted: Mon Nov 15, 2021 10:22 am
An SRS of 450 high school seniors gained an average of x = 44 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation o = 28. Suppose we had an SRS of just 100 high school seniors. What would be the margin of error for 95% confidence? Give your answer to three decimal places. margin of error: