document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=86637>Question 86637</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help understanding how to solve these problems...\r<BR>\n" );
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document.write( "Problem #1<BR>\n" );
document.write( "Let A and B be independent events with P(A) = (1)/(4) and P(B) = (1)/(5)\r<BR>\n" );
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document.write( "Find P (A (An upside down letter U) B) and P (A U B).\r<BR>\n" );
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document.write( "Problem #2<BR>\n" );
document.write( "In the previous section, we described an experiment in which the numbers 1, 2, 3, 4, and 5 are written on slips of paper, and 2 slips are drawn at random one at a time without replacement. Find each probability <BR>\n" );
document.write( "The probability that the first number is 3, given the following.<BR>\n" );
document.write( "a. The sum is 7.<BR>\n" );
document.write( "b. The sum is 8.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #62671 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=62671\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Problem #1<BR>\n" );
document.write( "Let A and B be independent events with P(A) = (1)/(4) and P(B) = (1)/(5) <BR>\n" );
document.write( "Find P (A (An upside down letter U) B)= (1/4)(1/5) = 1/20<BR>\n" );
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document.write( "and P (A U B) = P(A) + P(B) - P(A and B)<BR>\n" );
document.write( "= (1/4) + 1/5) -1/20<BR>\n" );
document.write( "= 9/20-1/20<BR>\n" );
document.write( "= 8/20<BR>\n" );
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document.write( "Problem #2<BR>\n" );
document.write( "In the previous section, we described an experiment in which the numbers 1, 2, 3, 4, and 5 are written on slips of paper, and 2 slips are drawn at random one at a time without replacement. Find each probability<BR>\n" );
document.write( "Sample space: <BR>\n" );
document.write( "1+2=3; 1+3=4; 1+4=5 ;1+5=6<BR>\n" );
document.write( "2+1=3;        2+3=5; 2+4=6 ; 2+5=7 <BR>\n" );
document.write( "       3+1=4; 3+2=5;         3+4=7; 3+5= 8<BR>\n" );
document.write( "              4+1=5; 4+2=6;  4+3=7;        4+5=9<BR>\n" );
document.write( "                     5+1=6;  5+2=7; 5+3=8; 5+4=9<BR>\n" );
document.write( "The probability that the first number is 3, given the following.<BR>\n" );
document.write( "a. P(The sum is 7) = 1/20<BR>\n" );
document.write( "b. P(The sum is 8) = 2/20<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H..\r<BR>\n" );
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