document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=928119>Question 928119</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Its is noted that 8% of school student are left handed. IF 20 students are randomly selected, calculate the<BR>\n" );
document.write( "(a) probability that none of them are left handed<BR>\n" );
document.write( "(b) probability that at most 2 are left handed<BR>\n" );
document.write( "(c) mean and standard deviation for the number of left handed students </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #563475 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=563475\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Previously Posted<BR>\n" );
document.write( "p(left-handed) = .08,  n = 20<BR>\n" );
document.write( "Using a TI calculator 0r similarly a Casio fx-115 ES plus<BR>\n" );
document.write( "P(x = 0LH) = binompdf(20, .08, 0)= .1887  0r  = .92^20<BR>\n" );
document.write( "P(x &#8804; 2LH) = binomcdf(20, .08, 2)= .7879<BR>\n" );
document.write( "mean = 1.6  s = sqrt(1.6*.92) = 1.2133 </SPAN>\n" );
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