document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=353225>Question 353225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,<BR>\n" );
document.write( "I'm currently taking Intro to Statistics 101 and I've been baffled by a few problems,which have eluded me for the most of the week. I would be most appreciative of any help with solving the problems below. Thank you for all of your time and help.\r<BR>\n" );
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document.write( "Sincerely,\r<BR>\n" );
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document.write( "Ken\r<BR>\n" );
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document.write( "Type Rh+ 39 35 8 4<BR>\n" );
document.write( "     Rh- 6  5  2 1            If 2 of the 100 subjects randomly selected  <BR>\n" );
document.write( "                              the probability that they are both group O and <BR>\n" );
document.write( "                              type Rh+.<BR>\n" );
document.write( "                              <BR>\n" );
document.write( "                              a.assume the selections are made with replacement<BR>\n" );
document.write( "                              b.assume the selections are made without  <BR>\n" );
document.write( "                                replacement.\r<BR>\n" );
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document.write( "                              \r<BR>\n" );
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document.write( "                               People with blood O and type Rh- are considered <BR>\n" );
document.write( "                               to be universal donors, because they can give <BR>\n" );
document.write( "                               blood to anyone If 4 of the 100 subjects <BR>\n" );
document.write( "                               are randomly selected, find the probability that <BR>\n" );
document.write( "                               they are all universal donors.\r<BR>\n" );
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document.write( "                               a. assume that the selections are made with <BR>\n" );
document.write( "                                 replacement.<BR>\n" );
document.write( "                               <BR>\n" );
document.write( "                               b. assume that the selections are made without <BR>\n" );
document.write( "                                  replacement.<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #252427 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=252427\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">               Group<BR>\n" );
document.write( "          O   A   B  AB<BR>\n" );
document.write( " Type Rh+ 39  35  8  4<BR>\n" );
document.write( "      Rh- 6   5   2  1\r<BR>\n" );
document.write( "\n" );
document.write( " If 2 of the 100 subjects randomly selected  <BR>\n" );
document.write( " the probability that they are both group O and <BR>\n" );
document.write( " type Rh+.<BR>\n" );
document.write( "P(a person is O and type Rh+) = 39/100<BR>\n" );
document.write( "-------                              <BR>\n" );
document.write( " a.assume the selections are made with replacement<BR>\n" );
document.write( "P(2 people are O and Rh+) = 0.39^2 = 0.1521<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( " b.assume the selections are made without replacement.<BR>\n" );
document.write( "(2 people are O and Rh+) = (39/100)(38/99) = 0.1497<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "People with blood O and type Rh- are considered <BR>\n" );
document.write( "to be universal donors, because they can give <BR>\n" );
document.write( "blood to anyone If 4 of the 100 subjects <BR>\n" );
document.write( "are randomly selected, find the probability that <BR>\n" );
document.write( "they are all universal donors.\r<BR>\n" );
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document.write( "a. assume that the selections are made with replacement.<BR>\n" );
document.write( "0.39^4<BR>\n" );
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document.write( "b. assume that the selections are made without replacement.<BR>\n" );
document.write( "39C4/100C4 = 0.0210<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.                              \r<BR>\n" );
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document.write( "                               <BR>\n" );
document.write( "=====================================================<BR>\n" );
document.write( " <BR>\n" );
document.write( "Where does type O fit into the scheme?<BR>\n" );
document.write( "What are the numbers for type O?\r<BR>\n" );
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document.write( "----------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========== </SPAN>\n" );
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