Question

The winning team's score in 11 high school basketball games were recorded. If the sample mean is 9.5 points and sample standard deviation is 0.25 points, what is the 98% confidence interval for the true population mean?

Answer 1

Boy, that is a really low mean for scoring in a basketball game! Are you sure you don't have a typo? Or is this the difference between the scores for the two teams?

98% = mean ± 2.33 SEm

SEm = SD/√n