A random poll of 600 working men found that 11% had taken on a second job to help pay the bills. a) Estimate the true percentage of men that are taking on second jobs by constructing a 95% confidence interval. b) A pundit on a TV news show claimed that only 8% of working men had a second job. Use your confidence interval to test whether his claim is plausible given the poll data. a) Construct a 95% confidence interval for the population proportion. The 95% confidence interval is ( , ). (Round to three decimal places as needed.)