document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=350161>Question 350161</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Twenty mp3 players are produced in a production run.  The probability of producing a defective mp3 player is 3%.  What is the expected number of NON-defective mp3 players in the production run?  What is the probability that at least 17 mp3 players are NON-defective? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #250285 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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/cgi-bin/show-face.mpl?user=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=250285\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20 * .97 = 19.4 the expected number of NON-defective mp3 players in the production run.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x=.97 and y=.03<BR>\n" );
document.write( "Expand (x+y)^20<BR>\n" );
document.write( "x^20+20x^19y+190x^18y^2+1140x^17y^3=.9973 probability that at least 17 mp3 players are NON-defective<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );