document.write( "Question 343434: A recent survey of 50 executives who were laid off from their previous position revealed
\n" ); document.write( "it took a mean of 26 weeks for them to find another position. The standard deviation of
\n" ); document.write( "the sample was 6.2 weeks. Construct a 95 percent confidence interval for the population
\n" ); document.write( "mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.
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Algebra.Com's Answer #245819 by stanbon(75887)\"\" \"About 
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A recent survey of 50 executives who were laid off from their previous position revealed
\n" ); document.write( "it took a mean of 26 weeks for them to find another position. The standard deviation of
\n" ); document.write( "the sample was 6.2 weeks. Construct a 95 percent confidence interval for the population
\n" ); document.write( "mean. ---
\n" ); document.write( "xbar = 26
\n" ); document.write( "E = invT(0.975 when df = 49)
\n" ); document.write( "= 2.0096 * [0.8768] = 1.7620
\n" ); document.write( "------
\n" ); document.write( "95% CI: 26-1.762 < u < 26+1.762
\n" ); document.write( "95% CI: 24.238 < u < 27.762
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\n" ); document.write( "Is it reasonable that the population mean is 28 weeks? Justify your answer.
\n" ); document.write( "28 is not in the 95% confidence interval.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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