Hard times In June 2010, a random poll of 800 workingmen found that 9% had taken on a second job to help paythe bills. (www.careerbuilder.com)a) Estimate the true percentage of men that are taking onsecond jobs by constructing a 95% confidence interval.b) A pundit on a TV news show claimed that only 6% of working men had a second job. Use your confi-dence interval to test whether his claim is plausible given the poll data.

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Hard times In June 2010, a random poll of 800 working
men found that 9% had taken on a second job to help pay
the bills. (www.careerbuilder.com)
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 6%
of working men had a second job. Use your confi-
dence interval to test whether his claim is plausible
given the poll data.
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