document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1041727>Question 1041727</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An unfair coin has a probability 0.6 of landing heads. The coin is tossed four times. What is the probability that it lands heads at least once? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #656663 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=656663\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p = 0.6 is the probability of landing heads\r<BR>\n" );
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document.write( "q = 1-p = 1-0.6 = 0.4 is the probability of landing tails\r<BR>\n" );
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document.write( "The probability of getting 4 tails in a row is q^4 = (0.4)^4 = 0.4*0.4*0.4*0.4 = 0.0256\r<BR>\n" );
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document.write( "Subtract this from 1:<BR>\n" );
document.write( "1-0.0256 = 0.9744\r<BR>\n" );
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document.write( "The probability of getting at least one head is 0.9744\r<BR>\n" );
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document.write( "Final Answer: 0.9744 </SPAN>\n" );
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