document.write( "Question 1195558: For a confidence level of 85% for a mean with n = 16, find the critical value t.\r
\n" ); document.write( "\n" ); document.write( "Enter the answer to 2 decimal places. \n" ); document.write( "
Algebra.Com's Answer #828123 by Theo(13342)\"\" \"About 
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confidence level is 85% = .85
\n" ); document.write( "number of sample elements is 16.
\n" ); document.write( "you want to find the critical t-value. rounded to 2 decimal places.
\n" ); document.write( "you could be looking for a 2 sided confidence level or a one sided confidence level.
\n" ); document.write( "the number of degrees of freedom is equal to the sample size minus 1 = 15.
\n" ); document.write( "your alpha or significance level is 1 - .85 = .15
\n" ); document.write( "you can use a calculator or you can use a table.
\n" ); document.write( "the calculator i used is found at https://calculator-online.net/critical-value-calculator/
\n" ); document.write( "i selected critical value for t.
\n" ); document.write( "i entered significance level of .15 with 15 degrees of freedom.
\n" ); document.write( "i clicked on calculate and the calculator told me (scroll down if it's not shown) that:
\n" ); document.write( "one-tailed critical t-value = 1.0735 = 1.07
\n" ); document.write( "two-tailed critical t-value = 1.5172 = 1.52
\n" ); document.write( "the confidence level is usually two tailed, so go with 1.52 unless otherwise instructed.
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