document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=364556>Question 364556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could someone help me to understand how you get the answer to the problems leisted. I have it to a point but I get stuck. \r<BR>\n" );
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document.write( "1. If the random variable z is the standard normal score, is it true that P(-3 < z < 3) > 1? Why or why not?\r<BR>\n" );
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document.write( "2. Givent a binomial distribution with n = 29 and p = 0.83, would the normal distribution provide a reasonable approximation? Why or why not?\r<BR>\n" );
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document.write( "3. Find the area under the standard normal curve for the following: a). P(z < -0.25) b). P(0.55 < z < 0) c.) P(-1.91 < z < 1.06) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259966 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=259966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. If the random variable z is the standard normal score, is it true that P(-3 < z < 3) > 1? Why or why not?<BR>\n" );
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document.write( "No.  Maximum area under the normal curve is +1.  No probability<BR>\n" );
document.write( "can exceed +1.<BR>\n" );
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document.write( "2. Given a binomial distribution with n = 29 and p = 0.83, would the normal distribution provide a reasonable approximation? Why or why not?<BR>\n" );
document.write( "np = 24<BR>\n" );
document.write( "nq = 4.93<BR>\n" );
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document.write( "Since nq is not > 5 the normal approx should not be used<BR>\n" );
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document.write( "3. Find the area under the standard normal curve for the following: <BR>\n" );
document.write( "a). P(z < -0.25) = normalcdf(-100,-0.25) = 0.4013<BR>\n" );
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document.write( "b). P(0.55 < z < 0) <BR>\n" );
document.write( "Note: Your inequality is backward.<BR>\n" );
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document.write( "c.) P(-1.91 < z < 1.06) = normalcdf(-1.91<1.06) = 0.8274<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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