During the Primary Elections of 1996, Candidate a Showed the Following

During the primary elections of 1996, candidate A showed the following pre-election voter support in Tennessee and Mississippi.
Voters Surveyed Voters Favoring Candidate A
Tennessee 500 295
Mississippi 700 357
a. Develop a 95% confidence interval estimate for the difference between the proportion of voters favoring candidate A in the two states.
b. Is there conclusive evidence that one of the two states had a larger proportion of voters' support? If yes, which state? Explain.