For many years businesses have struggled with the rising cost of health care. butrecently, the increases have slowed due to less inflation in health care prices andemployees paying for a larger portion of health care benefits. A recent Mercer surveyshowed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage in 2009. Suppose the survey was based on a sample of800 companies. Compute the margin of error and a 95% confidence interval for theproportion of companies likely to require higher employee contributions for health carecoverage in 2009.

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For many years businesses have struggled with the rising cost of health care. but
recently, the increases have slowed due to less inflation in health care prices and
employees paying for a larger portion of health care benefits. A recent Mercer survey
showed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage in 2009. Suppose the survey was based on a sample of
800 companies. Compute the margin of error and a 95% confidence interval for the
proportion of companies likely to require higher employee contributions for health care
coverage in 2009.

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