document.write( "Question 270108: 1. Find the critical value zc necessary to form a confidence interval at 97% level of confidence \n" ); document.write( "
Algebra.Com's Answer #197939 by stanbon(75887)\"\" \"About 
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Ans: Each tail is (1/2)3% = 0.015 \r
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\n" ); document.write( "\n" ); document.write( "Using a TI-84 I get invNorm(0.985) = 2.1770
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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