A Market Research Firm Reported That the Mean Annual Earnings $\bar { x }$

A market research firm reported that the mean annual earnings of all family practitioners in the United States was $180,612. A random sample of 56 family practitioners in New York that month had mean earnings of $\bar { x }$ =$190,854 with a standard deviation of $41,847. You wish to test whether family practitioners in New York make more than the national average.
State the null and alternate hypotheses.

A) $H _ { 0 } : \mu \leq \$ 180,612 , H _ { 1 } : \mu > \$ 180,612$
B) $H _ { 0 } : \mu = \$ 180,612 , H _ { 1 } : \mu > \$ 180,612$
C) $H _ { 0 } : \mu = \$ 190,854 , H _ { 1 } : \mu > \$ 190,854$
D) $H _ { 0 } : \mu = \$ 190,854 , H _ { 1 } : \mu \neq \$ 190,854$