A Researcher Wants to Estimate the Percent of the Population

question 10

Multiple Choice

A researcher wants to estimate the percent of the population that uses the radio to stay informed on local news issues.The researcher wants to estimate the population proportion with a 90% level of confidence. He estimates from previous studies that no more than 30% of the population stay informed on local issues through the radio.The researcher wants the estimate to have an error of no more than .02. The necessary sample size is at least _______.

• A) 29
• B) 47
• C) 298
• D) 1421
• E) 1500

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