document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=472922>Question 472922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) A recent study of 750 internet users in Europe found that 260 of internet users were women.  What is the 95% confidence interval of the true proportion of women in Europe who use the internet?\r<BR>\n" );
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document.write( "2)  A survey of 800 women shoppers found that 17% of them shop on impulse.  What is the 98& confidence interval for the true proportion of women shhoppers who shop on impulse? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #324260 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=324260\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) A recent study of 750 internet users in Europe found that 260 of internet users were women. What is the 95% confidence interval of the true proportion of women in Europe who use the internet?<BR>\n" );
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document.write( "sample proportion: 260/750 = 0.3467<BR>\n" );
document.write( "ME = 1.96*sqrt[0.3467*0.6533/750] = 0.0744<BR>\n" );
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document.write( "95% CI: 0.35-0.07 < p < 0.35+0.07<BR>\n" );
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document.write( "2) A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98& confidence interval for the true proportion of women shoppers who shop on impulse?<BR>\n" );
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document.write( "Same procedure as above.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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