document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=748185>Question 748185</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A researcher wishes to estimate that mean age of all runners who participate in the annual Vancouver marathon. A random sample of 36 participants indicated a mean age of 31.4 years. It is known that the population standard deviation of ages is &#963; = 7.2 years.\r<BR>\n" );
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document.write( "Construct a 97% confidence interval for the population mean age.\r<BR>\n" );
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document.write( "Note: Express the confidence interval to 2 decimal places of accuracy.  </SPAN>\n" );
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