document.write( "Question 753348: A biologist reports a confidence interval of (3.1, 4.5) when estimating the mean height (in centimeters) of a sample of seedlings.
\n" ); document.write( "The estimated margin of error is?
\n" ); document.write( "The sample mean is?
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Algebra.Com's Answer #458333 by stanbon(75887)\"\" \"About 
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A biologist reports a confidence interval of (3.1, 4.5) when estimating the mean height (in centimeters) of a sample of seedlings.
\n" ); document.write( "The estimated margin of error is?
\n" ); document.write( "2*ME = (4.5-3.1)
\n" ); document.write( "ME = 1.4/2 = 0.7
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\n" ); document.write( "The sample mean is?
\n" ); document.write( "sample mean = (4.5+3.1)/2 = 7.6/2 = 3.8
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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