For a sample of 29 New England cities, a sociologist studies the crime rate in each city (crimes per 100,000 residents) as a function of its poverty rate (in ) and its median income (in $1,000s) He finds that SSE 4,136,781 and SST 7,662,937 

a. Calculate the standard error of the estimate (Round your answer to 4 decimal places) 

b1 What proportion of the sample variation in crime rate is explained by the variability in the explanatory variables (Round your answer to 4 decimal places).

b-2. What proportion is unexplained? (Round your answer to 4 decimal places.)