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What was the confidence level they used

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A sample of 64 collegiate baseball players produced a sample mean of 65 runs scored in the most recent season with a sample standard deviation of 13 runs scored. The researchers who took the sample assumed the distribution of runs scored is normally distributed and used the empirical rule to construct the confidence interval (61.75,68.25). What was the confidence level they used?

Reference no: EM132388428

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