On opening day of 2015 there were 750 players on the rosters of major league baseball teams. Suppose a sample of 65 major league baseball players showed an average annual salary $5,125,000 with a...

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Extracted text: On opening day of 2015 there were 750 players on the rosters of major league baseball teams. Suppose a sample of 65 major league baseball players showed an average annual salary $5,125,000 with a standard deviation of $1,950,240 and that 13 of the players in the sample were pitchers. Develop an approximate 95% confidence interval for the population mean annual income of major league baseball players. b. Develop an approximate 95% confidence interval for the total value of all 750 major league baseball player salaries. In the sample, 13 of the 65 players are pitchers. Develop an approximate 95% confi- dence interval for the proportion of major league players who are pitchers. c.