document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=924307>Question 924307</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A machine produces parts with lengths that are normally distributed with &#963; = 0.58. A sample of 20 parts has a mean length of 75.21. <BR>\n" );
document.write( "(a) Give a point estimate for &#956;. (Give your answer correct to two decimal places.)<BR>\n" );
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document.write( " (b) Find the 90% confidence maximum error of estimate for &#956;. (Give your answer correct to three decimal places.)<BR>\n" );
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document.write( " (c) Find the 90% confidence interval for &#956;. (Give your answer correct to three decimal places.) <BR>\n" );
document.write( "Lower Limit  \r<BR>\n" );
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document.write( "Upper Limit  \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 #560745 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=560745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A machine produces parts with lengths that are normally distributed with &#963; = 0.58. A sample of 20 parts has a mean length of 75.21.<BR>\n" );
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document.write( "(a) Give a point estimate for &#956;. (Give your answer correct to two decimal places.)<BR>\n" );
document.write( "Ans:: u = 75.21<BR>\n" );
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document.write( " (b) Find the 90% confidence maximum error of estimate for &#956;. (Give your answer correct to three decimal places.)<BR>\n" );
document.write( "ME = 1.645*0.58/sqrt(20)<BR>\n" );
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document.write( " (c) Find the 90% confidence interval for &#956;. (Give your answer correct to three decimal places.)<BR>\n" );
document.write( "90% CI:: 75.21 - 1.645*(0.58/sqrt(20)) < u < 75.21 + 1.645*(0.58/sqrt(20))<BR>\n" );
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document.write( "Lower Limit:: 75.21-1.645*(0.58/sqrt(20)) \r<BR>\n" );
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document.write( "Upper Limit::: 75.21+1.645*(0.58/sqrt(20))<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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