The city manager of Pearson, Ontario, has received a complaint from the local union of firefighters that they are underpaid. Not having much time, the city manager gathers the records of a random...

The city manager of Pearson, Ontario, has received a complaint from the local union of firefighters that they are underpaid. Not having much time, the city manager gathers the records of a random sample of 27 firefighters and finds that their average salary is $38,073 with a standard deviation of $575. If she knows that the average salary nationally is $38,202, how can she respond to the complaint? Should she use a one-tailed test in this situation? Why? What would she say in a memo to the union to respond to the complaint?