Demographics: Police and Fire Protection Is there a relation between police protection and fire protection?

A random sample of large population areas gave the following information about the number of local police and the number of local firefighters (units in thousands) (Reference: Statistical Abstract of the United States).

Area 1 2 3 4 5 6 7 8 9 10 11 12 13 Police 11.1 6.6 8.5 4.2 3.5 2.8 5.9 7.9 2.9 18.0 9.7 7.4 1.8 Firefighters 5.5 2.4 4.5 1.6 1.7 1.0 1.7 5.1 1.3 12.6 2.1 3.1 0.6

(i) Rank-order police using 1 as the largest data value. Also rank-order firefighters using 1 as the largest data value. Then construct a table of ranks to be used for a Spearman rank correlation test.

(ii) Use a 5% level of significance to test the claim that there is a monotone relationship (either way)

between the ranks of number of police and number of firefighters.

AppendixLO1