document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1078362>Question 1078362</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An urn contains <BR>\n" );
document.write( "7<BR>\n" );
document.write( " white and <BR>\n" );
document.write( "6<BR>\n" );
document.write( " green balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all <BR>\n" );
document.write( "4<BR>\n" );
document.write( " balls drawn from the urn are white? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #692857 by </B><A HREF=/tutors/aboutme.mpl?userid=natolino_2017><B>natolino_2017(77)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=natolino_2017><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=692857\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P()=P(Pick a white ball)*P(Pick a white ball)*P(Pick a white ball)*P(Pick a white ball).\r<BR>\n" );
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document.write( "P(Pick a white ball)= 7/(6+7)=7/13.\r<BR>\n" );
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document.write( "P()=(7/13)^4 = 2401/28561 = 0.0841 = 8.41%\r<BR>\n" );
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document.write( "*******bonus: if the question switches to without replacement:\r<BR>\n" );
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document.write( "P() =P(pick a white ball)* P(pick another white ball) *P(pick another white ball(2)) * P(pick another white ball(3)).<BR>\n" );
document.write( "P()= 7/(6+7) * 6/(6+6)* 5/(6+5)* 4/(6+4) = 7/143 = 0.0196 = 1.96%************* \r<BR>\n" );
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document.write( "#natolino </SPAN>\n" );
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