document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=573830>Question 573830</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a survey of 1,000 citizens finds that the proportion of respondents who report not having health insurance is .200. Would this sample result be unusual if the true proportion in the population is .158?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #368880 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=368880\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose a survey of 1,000 citizens finds that the proportion of respondents who report not having health insurance is .200. Would this sample result be unusual if the true proportion in the population is .158? <BR>\n" );
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document.write( "z(0.2) = (0.2-0.158)/sqrt[0.158*0.842/1000] = 3.6414<BR>\n" );
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document.write( "Yes, 0.2 is unuaual.  It is over 3 standard deviations above the mean.<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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