A regression model to predictY, the state-by-state 2005 burglary crime rate per 100,000 people, used the following four state predictors:X₁= median age in 2005,X₂= number of 2005 bankruptcies per 1,000 people,X₃= 2004 federal expenditures per capita, andX₄= 2005 high school graduation percentage.

PredictorCoefficientIntercept4,411.9020AgeMed-27.580Bankrupt20.0336FedSpend-0.0258HSGrad%-25.1354

(a)Write the fitted regression equation.(Round your answers to 4 decimal places. Negative values should be indicated by a minus sign.)

y

y^

=+AgeMed+Bankrupt+FedSpend+HSGrad%

(b-1)The 2005 state-by-state crime rate per 100,000

increases by about 28 as the state median age increases.