document.write( "Question 1047079: Find the t-value for a 90% confidence interval when the sample size is 20. \n" ); document.write( "
Algebra.Com's Answer #662604 by stanbon(75887)\"\" \"About 
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Find the t-value for a 90% confidence interval when the sample size is 20.
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\n" ); document.write( "Ans:: t = -invT(0.10,19) = 1.3277
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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