Assume Mayor A had 52% of the votes in 2016. The estimated proportion of the votes for Mayor A in current election is 57% using a sample of 400 registered voters. Answer the following questions. Calculate the test statistics and fill in its value below (3 decimal points). Calculate the critical value and fill in its value in question 2 (3 decimal points). Is there enough evidence to suggest that the Mayor A has stronger support in current election at 2% significance level (question 3).