Section 6.2: Distribution of a Sample Mean Example 5: Major League Baseball Players Salaries There were 855 major league baseball players in 2012 and their mean salary was m = 3.44 million dollars...

Section 6.2: Distribution of a Sample Mean

Example 5: Major League Baseball Players Salaries

There were 855 major league baseball players in 2012 and their mean salary was m = 3.44 million dollars with standard deviation s = 4.70 million dollars.   If we take random samples of size
n = 30
players and calculate the mean salary, in millions of dollars, of each sample, describe the shape, center, and standard error of the distribution of sample means.

Example 6: More Major League Baseball Players Salaries

Using the same data as Example 5, but now taking samples of size
n = 75, describe the shape, center, and standard error of the distribution of sample means.   Compare your answers with those of Example 5.