document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112728>Question 1112728</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help me to Solve this A Confidence Interval for a Population Proportion Problem ! Need help for question B\r<BR>\n" );
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document.write( "The Fox TV network is considering replacing one of its prime-time crime investigation shows with a new family-oriented comedy show. Before a final decision is made, network executives commission a sample of 350 viewers. After viewing the shows, 250 indicated they would watch the new show and suggested it replace the crime investigation show.\r<BR>\n" );
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document.write( "A) Estimate the value of the population proportion. (Round your answers to 3 decimal places.) (i already found the answer i think its 0.714)\r<BR>\n" );
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document.write( "B)Develop a 90% confidence interval for the population proportion. (Use  z Distribution Table.) (Round your answers to 3 decimal places.)<BR>\n" );
document.write( "Confidence interval ........ and ........, </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #727797 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=727797\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> B)  standard error(SE) = square root(0.714 * (1-0.714)/350) = 0.024<BR>\n" );
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document.write( "alpha(a) = 1 - (90/100) = 0.10<BR>\n" );
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document.write( "critical probability(p*) = 1 - (a/2) = 0.95<BR>\n" );
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document.write( "critical value(CV) is the z-score corresponding to p*, CV = 1.645<BR>\n" );
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document.write( "margin of error(ME) = CV * SE = 1.645 * 0.024 = 0.0395 approximately 0.040<BR>\n" );
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document.write( "90% confidence interval is 0.714 + or - 0.040 or (0.674, 0.754)<BR>\n" );
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