document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394210>Question 394210</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please! help me understand mean ,exactly,atmost,neither, thank you so much<BR>\n" );
document.write( "Find probability if a coin is tossed 5 time<BR>\n" );
document.write( "P(0 tails)<BR>\n" );
document.write( "P(exactly 1 tail)<BR>\n" );
document.write( "P(at most 2 tails)<BR>\n" );
document.write( "P(at least 4 tails) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #279695 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=279695\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find probability if a coin is tossed 5 time<BR>\n" );
document.write( "P(0 tails) = P(5 heads) = (1/2)^5 = 1/32<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "P(exactly 1 tail) = 5C1(1/2)(1/2)^4 = 5(1/32) = 5/32<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "P(at most 2 tails) = P(0,or 1, or 2 tails) = (1/32) + (5/32) + 5C2(1/2)^5<BR>\n" );
document.write( "= 6/32 + 10/32 = 16/32 = 1/2<BR>\n" );
document.write( "-----------------------------------<BR>\n" );
document.write( "P(at least 4 tails) = P(4 or 5 tails) = 5C4(1/2)^5 + 5C5(1/2)^5 <BR>\n" );
document.write( "= 5/32 + 1/32 = 6/32 = 3/16<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );