document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=406758>Question 406758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> NEED HELP PLEASE!\r<BR>\n" );
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document.write( "1)What probability value would be needed to complete the following probability distribution?x -2 -1 0 1 2 <BR>\n" );
document.write( "P(x) 0.14 0.14   0.12 0.30 <BR>\n" );
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document.write( "2)Find the mean of the distribution shown.x -3 -2 -1 0 <BR>\n" );
document.write( "P(x) 0.20 0.24 0.48 0.08 \r<BR>\n" );
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document.write( "3) A university has 10,000 students of which 8000 are male and 2000 are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students\r<BR>\n" );
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document.write( "4)Find the mean of the distribution shown.x 1 2 <BR>\n" );
document.write( "P(x) 0.25 0.75 \r<BR>\n" );
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document.write( "5)Find the mean of the distribution shown.x 4 6 <BR>\n" );
document.write( "P(x) 0.32 0.68 \r<BR>\n" );
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document.write( "6)A computer store has 50 printers of which 30 are laser printers and 20 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.\r<BR>\n" );
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document.write( "7)Find the mean of the distribution shown.x 0 3 5 <BR>\n" );
document.write( "P(x) 0.30 0.24 0.46 \r<BR>\n" );
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document.write( "8)What value would be needed to complete the following probability distribution?<BR>\n" );
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document.write( "0 1/3 <BR>\n" );
document.write( "1 1/8 <BR>\n" );
document.write( "2 1/8 <BR>\n" );
document.write( "3   <BR>\n" );
document.write( "4 1/6  \r<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 #286943 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=286943\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1)What probability value would be needed to complete the following probability distribution?x -2 -1 0 1 2 <BR>\n" );
document.write( "P(x) 0.14 0.14 0.12 0.30<BR>\n" );
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document.write( "The P(x) listed add up to 0.7; you need 0.3 to complete the distribution.<BR>\n" );
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document.write( "2)Find the mean of the distribution shown.x -3 -2 -1 0 <BR>\n" );
document.write( "P(x) 0.20 0.24 0.48 0.08\r<BR>\n" );
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document.write( "Multiply each x value by its probability.<BR>\n" );
document.write( "Add up the four products to get:<BR>\n" );
document.write( "x-bar = -1.5<BR>\n" );
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document.write( "3) A university has 10,000 students of which 8000 are male and 2000 are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students<BR>\n" );
document.write( "male mean = np = 30*0.8 = 24<BR>\n" );
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document.write( "4)Find the mean of the distribution shown.<BR>\n" );
document.write( "x 1 2 <BR>\n" );
document.write( "P(x) 0.25 0.75<BR>\n" );
document.write( "Same procedure as #2<BR>\n" );
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document.write( "5)Find the mean of the distribution shown.<BR>\n" );
document.write( "x 4 6 <BR>\n" );
document.write( "P(x) 0.32 0.68<BR>\n" );
document.write( "Same procedure as #2<BR>\n" );
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document.write( "6)A computer store has 50 printers of which 30 are laser printers and 20 are ink jet printers. If a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.<BR>\n" );
document.write( "mean = np = 10*20/50 = 4<BR>\n" );
document.write( "variance = npq = 4*30/50 = 12/5 = 2.4<BR>\n" );
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document.write( "7)Find the mean of the distribution shown.<BR>\n" );
document.write( "x 0 3 5 <BR>\n" );
document.write( "P(x) 0.30 0.24 0.46<BR>\n" );
document.write( "Same as #2<BR>\n" );
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document.write( "8)What value would be needed to complete the following probability distribution?\r<BR>\n" );
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document.write( "0 1/3 = 8/24<BR>\n" );
document.write( "1 1/8 = 3/24<BR>\n" );
document.write( "2 1/8 = 3/24<BR>\n" );
document.write( "3 <BR>\n" );
document.write( "4 1/6 = 4/24<BR>\n" );
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document.write( "Missing 6/24 = 1/4<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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