The manager of a commuter rail transportation system was recently asked by her governing board to determine the factors that have a significant impact on the demand for the rides in the large city served by the transportation network. The system manager has collected data on variables that might be related to the number of weekly riders on the city's rail system. The file P10_20.xlsx. contains these data.

Are the signs of the estimated coefficients consistent with the expectations? Is there evidence of multicollinearity in the model?