Let mu be the mean annual salary of major league baseball players for 2002. assume that the standard deviation of the salaries of these players is dollar-sign 80,000 . what is the probability that the 2002 mean salary of a random sample of 80 baseball players was within dollar-sign 15,000 of the population mean, mu . assume that startfraction n over upper n endfraction less-than-or-equal-to 0.05 .