document.write( "Question 1086889: a) determine which distribution you would use to determine the critical value (normal distribution, t distribution, or neither) and state the critical value
\n" ); document.write( "b) calculate the margin of error for the given confidence level if possible. If this is not possible, indicate what would be required in order to perform the calculation\r
\n" ); document.write( "\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "Normally distributed population with σ = 40, n = 20, 98% confidence level.
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #701146 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
Normal distribution with known sd.
\n" ); document.write( "98% CI uses z=2.33
\n" ); document.write( "interval width is +/-2.33*40/sqrt (20)=+/-2.33*8.94=+/-20.84
\n" ); document.write( "
\n" ); document.write( "
\n" );