a. Does this regression equation provide evidence of a statistically significant relation between voter support for Proposition 103 in a county and changes in average auto premiums affected by Proposition 103 in that county? Perform an F-test at the 95 percent level of confidence. b. Test the intercept estimate for significance at the 95 percent confidence level. If Proposition 103 has no impact on auto insurance premiums in any given county, what percent of voters do you expect will vote for the proposition? c. Test the slope estimate for significance at the 95 percent confidence level. If P increases by 10 percent, by what percent does the vote for Proposition 103 decline?