document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1058659>Question 1058659</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Base in recent survey, 20% of the adults in USA smoke. In a survey of 50 statistics students, it is found that 6 of them smoke. Find the probability that should be used for determining whether the 20% rate is correct for statistics students. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #673799 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=673799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Question ambiguous.  The probability that should be used is 20%.<BR>\n" );
document.write( "0.12 smoke<BR>\n" );
document.write( "the standard error at the 95% level has an interval that is 1.96*sqrt(0.2*0.8/50); that sqrt is 0.0565; the product is 0.1109<BR>\n" );
document.write( "The confidence interval is (0.0091, 0.2309)<BR>\n" );
document.write( "Since 0.20 is in the 95% interval we cannot conclude that statistics students smoke at a different percentage than do other adults.<BR>\n" );
document.write( "The p-value for this result is 0.16 </SPAN>\n" );
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