document.write( "Question 1139070: A local news team wants to estimate the number of people in a town of population 16,000, who have the Ring security system. They interview 250 homes. Of those polled, 116 had a Ring security system. How many homes in the city might one expect to have the security system? Round to the nearest whole number, if necessary. \n" ); document.write( "
Algebra.Com's Answer #756849 by Theo(13342)\"\" \"About 
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116/250 * 16000 = 7424.\r
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\n" ); document.write( "\n" ); document.write( "if the sample is a truly random sample of the homes in the population, then it is reasonable to expect that the proportion of homes that have a ring security system in the sample will be pretty close to the proportion of home that have a ring security system in the population.\r
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\n" ); document.write( "\n" ); document.write( "116/250 = .464.\r
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\n" ); document.write( "\n" ); document.write( ".464 * 16000 = 7424 plus or minus some number to account for the possibility of sampling error.\r
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