document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1031505>Question 1031505</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A box has 10marbles in it, 7red and 3white. Suppose we draw a marble from the box, replace it, and then draw another. Find the probability that:\r<BR>\n" );
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document.write( "(a) Both marbles are red.\r<BR>\n" );
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document.write( "(b) Just one of the two marbles is red. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #646191 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=646191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A box has 10marbles in it, 7red and 3white. Suppose we draw a marble from the box, replace it, and then draw another. Find the probability that:\r<BR>\n" );
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document.write( "(a) Both marbles are red.<BR>\n" );
document.write( "P(r and r) = 7/10 *7/10 = 49/100 = 0.49<BR>\n" );
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document.write( "(b) Just one of the two marbles is red.<BR>\n" );
document.write( "Note: P(w and w) = (3/10)(3/10) = 0.09<BR>\n" );
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document.write( "P(one is red) = 1 - P(both are red)-P(both are white) = 1-0.49-0.09 = 0.42<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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