Refer to the baseball 2012 data, which report information on the 30 major league baseball teams for the 2012 season. Assume the 2012 data represents a sample.

a. Develop a 95% confidence interval for the mean number of home runs per team.

b. Develop a 95% confidence interval for the mean number of errors committed by each team.

c. Develop a 95% confidence interval for the mean number of stolen bases for each team.

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