(1) Econometrics Refer to the Stata Data file (posted on Brightspace under Content). In Excel or in Stata, run a multivariate linear regression with MURDERS (murders per 100,000 population) as dependent variable (y) and the following four independent x-variables: OVER65 (percentage share of population over 65 years old), POVERTY (percentage of population under the poverty line), DENS (density in people per square mile), and TEMP_JAN (avg temperatures in January in Fahrenheit) a) Show your equation. b) Assume the coefficients would apply to a fictitious city with a population of 1 million. What would the impact of a one-unit increase of each of the independent variables on MURDERS in our city be ________. (referring to 2 decimals is okay). Carefully interpret the coefficients for OVER65, POVERTY, DENS and TEMP_JAN. Are all coefficients significant at the 5