document.write( "Question 142565This question is from textbook
\n" ); document.write( ": Find a confidence interval for μ assuming that each sample is from a normal population.
\n" ); document.write( "a. ¯x = 14, σ = 4, n = 5, 90 percent confidence
\n" ); document.write( "b. ¯x = 37, σ = 5, n = 15, 99 percent confidence
\n" ); document.write( "c. ¯x = 121, σ = 15, n = 25, 95 percent confidence \n" ); document.write( "
Algebra.Com's Answer #103773 by stanbon(75887)\"\" \"About 
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Find a confidence interval for μ assuming that each sample is from a normal population.
\n" ); document.write( "a. ¯x = 14, σ = 4, n = 5, 90 percent confidence
\n" ); document.write( "10.186 < u < 17.814
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\n" ); document.write( "b. ¯x = 37, σ = 5, n = 15, 99 percent confidence
\n" ); document.write( "33.157 < u < 40.843
\n" ); document.write( "-------------------------------
\n" ); document.write( "c. ¯x = 121, σ = 15, n = 25, 95 percent confidence
\n" ); document.write( "114.81 < u < 127.19
\n" ); document.write( "-------------------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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