Suppose that a poll asks voters how they feel about the Presidents handling of

Suppose that a poll asks voters how they feel about the Presidents handling of the crisis in the financial markets. The results show that 575 out of the 1280 people polled say they either approve or strongly approve of the Presidents handling of this matter. Based on the sample referenced above find a 95% confidence interval estimate for the proportion of the entire voter population who approve or strongly approve of the Presidents handling of the crisis in the financial markets. If the same sample proportion was found in a sample twice as largethat is 1150 out of 2560how would this affect the confidence interval?