A sample of 15 recent college graduates found that starting salaries for attorneys in New York City had a mean of $102,342 and a standard deviation of $21,756.
What does mu represent?
A. The average salary of all graduates in the sample, 102,342 dollars.
B. The average salary of all recently graduated attorneys in New York City, 102,342 dollars.
C. The average salary of all recently graduated attorneys in New York City, which is unknown.
D. The average salary of all graduates in the sample, which is unknown.