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17 Truthfulness in online profiles Many teens have posted profiles on a social networking website...

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17 Truthfulness in online profiles Many teens have posted profiles on a social networking website A sample survey in 2007 asked a random sample of teens with online profiles if they included false information in their pro files Of 170 younger teens aged 12 to 14 117 said yes Of 317 older teens aged 15 to 17 152 said yes 6 a Do these samples satisfy the guidelines for the large sample confidence interval b Give a 95 confidence interval for the difference between the proportions of younger and older teens in in gludo folce information in their online profiles

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