0.5 I Example 7.2: Presidential job performance A Zogby America poll involved 1,013 likely voters selected randomly from throughout the 48 contiguous United States using listed residential telephone numbers.The surveyers found that 466 voters rated the president's job performance as \"good\" or \"excellent.\" Find a 95% confidence interval for the true proportion. b) Do you have evidence in the data that less than 50% rate the president as \"good or excellent\