document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867255>Question 867255</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It has been estimated that only 27% of the people who need vision correction wear glasses. The others wear either contact lenses or have had eye surgery or do not bother with correcting their vision. In a sample of 20 people, what is the probability that fewer than 8 wear glasses? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #522904 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=522904\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It has been estimated that only 27% of the people who need vision correction wear glasses. The others wear either contact lenses or have had eye surgery or do not bother with correcting their vision. In a sample of 20 people, what is the probability that fewer than 8 wear glasses?<BR>\n" );
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document.write( "Binomial Problem with n = 20 and p(wear) = 0.27<BR>\n" );
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document.write( "P(x < 8) = binomcdf(20,0.27,7) = 0.8545<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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