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?

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  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

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