Question: An employment information service says that the standard deviation of the annual salaries for public relations managers is at least $14,500. The annual salaries for 18 randomly chosen public relations managers are listed. At ? =0.10, can you reject the claim? (Adapted from America’s Career InfoNet)

47,517 60,217 39,177 61,744 79,422 70,770

60,549 60,263 72,939 72,372 75,014 59,164

44,811 65,413 61,310 90,433 44,185 41,805