document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1053920>Question 1053920</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained what is the probability that at least 175 homes are going to be used as investment property?\r<BR>\n" );
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document.write( "How can I solve this with a calculator? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #669166 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=669166\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(x <= 175)<BR>\n" );
document.write( "Est = .23<BR>\n" );
document.write( "Sample:  p = 175/800 = .219<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28x+-+mu%29%2Fsqrt%28blue%28p%281-p%29%2Fn%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28x+-+mu%29%2Fsqrt%28blue%28p%281-p%29%2Fn%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=blue+%28.219+-+.23%29%2Fsqrt%28%28blue%28.23%2A.77%29%2F800%29%29 ALIGN=MIDDLE  ALT=\"z+=blue+%28.219+-+.23%29%2Fsqrt%28%28blue%28.23%2A.77%29%2F800%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Find z<BR>\n" );
document.write( "P(x <= 175) = normalcdf(-100, z-value) -100 a placeholder<BR>\n" );
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