document.write( "Question 1201712: In a survey, 12 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $33 and standard deviation of $10. Construct a confidence interval at a 98% confidence level.\r
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Algebra.Com's Answer #836202 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "TWIN problems were solved many times at this forum. \r
\n" ); document.write( "\n" ); document.write( "Below is a short list of solutions (probably, not full list)\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/Probability-and-statistics/Probability-and-statistics.faq.question.1189932.html\r
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\n" ); document.write( "\n" ); document.write( "Happy learning (!)\r
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