document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1122180>Question 1122180</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A recent survey found that 61% of all adults over the age of fifty wear glasses for driving. In a random sample of 60 adults over the age of fifty, use the binomial distribution to determine what is the mean and standard deviation of those that wear glasses.<BR>\n" );
document.write( "Select one:<BR>\n" );
document.write( "a. mean: 60; standard deviation: 14.274<BR>\n" );
document.write( "b. mean: 60; standard deviation: 3.778<BR>\n" );
document.write( "c. mean: 36.6; standard deviation: 3.778<BR>\n" );
document.write( "d. mean: 36.6; standard deviation: 14.274\r<BR>\n" );
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document.write( "Thanks very much </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #738316 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=738316\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean is np=60*0.61=36.6<BR>\n" );
document.write( "variance is np(1-p)=36.6*0.39=14.27<BR>\n" );
document.write( "sd is sqrt (var)=3.78<BR>\n" );
document.write( "C </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );