document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=914294>Question 914294</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.	From the previous experience it is known that 75% of all IT graduates get a job within three months of their graduation. In an IT college 25 students will graduate this semester. <BR>\n" );
document.write( "a)	What is the probability that more than 18 will get a job within three months of their graduation?<BR>\n" );
document.write( "b)	What is the probability that between 12 and 15 graduates will get a job within three months of their graduation?<BR>\n" );
document.write( "c)	What are the mean and standard deviation of this distribution<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 #555004 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=555004\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p = .75,  n = 25<BR>\n" );
document.write( "a) 18/25 = .72, z(0.72) = (0.72-0.75)/sqrt[0.75*0.25/25) <BR>\n" );
document.write( "P (x >18) = normalcdf(z, 100)<BR>\n" );
document.write( "...........<BR>\n" );
document.write( "b) zL = (.48-.75)/sqrt[0.75*0.25/25), zH = (.6 - .75)/sqrt[0.75*0.25/25) <BR>\n" );
document.write( "P( 12 < x < 15) = normalcdf(zL,zH)<BR>\n" );
document.write( "..........<BR>\n" );
document.write( "mean = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.75%2A25 ALIGN=MIDDLE  ALT=\".75%2A25\"   DISABLED_style= \"max-width:90%; height:auto;\" >, sd = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28.75%2A.25%2A25%29 ALIGN=MIDDLE  ALT=\"sqrt%28.75%2A.25%2A25%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );