Suburban towns often spend a large fraction of their municipal budgets on public safety ( police, fire, and ambulance) services. A taxpayers€™ group felt that very small towns were likely to spend large amounts per person because they have such small financial bases. The group obtained data on the per capita expenditure for public safety of 29 suburban towns in a metropolitan area, as well as the population of each town in units of 10,000 people.

a. If the taxpayers€™ group is correct, what sign should the slope of the regression model have?
b. Does the slope in the output confirm the opinion of the group?

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TownPo Expend 140 142 165 75 143 4 142 144 1445 138 Town Pop Expend 141 40 139 137 1372 1370 136.5 136 135.5 TownPop3840 43 4 49495 52 60 76 Expend 10 132 28 135 129 126 70 95 310 20 24 31 32 32 32 36 36