Q: A political pollster is hired to estimate the proportion of voters in favor of Senator Claghorn. He takes a sample of 400 and finds 56% of the voters favor the Senator. A 95% confidence interval...

Q: A political pollster is hired to estimate the proportion of voters in favor of Senator Claghorn. He takes a sample of 400 and finds 56% of the voters favor the Senator. A 95% confidence interval for the true population proportion favoring Senator Claghorn is: (a) .56 +/- 1.96SQRT((.56)(.44)) (b) .44 +/- 1.96SQRT((.56)(.44)/400) (c) .56 +/- 1.96SQRT((.44)(.56)/400) (d) .56 +/- 1.64SQRT((.56)(.44)/400) (e) none of the above.