document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=894846>Question 894846</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a.Estimate a value of Z that the area under the standard normal curve to the  <BR>\n" );
document.write( "  right of z is 0.25.<BR>\n" );
document.write( "b find the area under the standard normal curve between z1= -2.50 and z2 = -1.25<BR>\n" );
document.write( "c. estimate the value of z such that the area under the standard normal curve  <BR>\n" );
document.write( "   between -z and z is 0.70.<BR>\n" );
document.write( "d. for the standard normal curve find the value of z such that the area to <BR>\n" );
document.write( "   the left of -z plus the area to the right of z is 0.05.\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 #542518 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=542518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a.Estimate a value of Z that the area under the standard normal curve to the <BR>\n" );
document.write( "right of z is 0.25.<BR>\n" );
document.write( "P(z > 0.25) = normalcdf(0.25,100) = 0.4013<BR>\n" );
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document.write( " b find the area under the standard normal curve between z1= -2.50 and z2 = -1.25<BR>\n" );
document.write( "P(-2.5 < z < -1.25) = normalcdf(-2.5,-1.25) = 0.0994<BR>\n" );
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document.write( " c. estimate the value of z such that the area under the standard normal curve <BR>\n" );
document.write( "between -z and z is 0.70.<BR>\n" );
document.write( "Note: 0.35 must be on the left side of the mean.<BR>\n" );
document.write( "That leaves a left tail of 0.15<BR>\n" );
document.write( "invNorm(0.15) = -1.036<BR>\n" );
document.write( "Answer:: z = 1.036<BR>\n" );
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document.write( " d. for the standard normal curve find the value of z such that the area to <BR>\n" );
document.write( "the left of -z plus the area to the right of z is 0.05.<BR>\n" );
document.write( "Ans: invNorm(0.05) = -1.645<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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