document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206720>Question 1206720</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the empirical rule to solve the following problems below Assume all the data follow the normal distribution: A researcher is studying the proportion of adults who support a particular policy. A random sample of 200 adults was selected, and 150 of them indicated support for the policy. a. Find a 95% confidence interval for the true proportion of adults who support the policy.<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 #844329 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=844329\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if a random sample of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=200 ALIGN=MIDDLE  ALT=\"200\"   DISABLED_style= \"max-width:90%; height:auto;\" > adults was selected, and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=150+ ALIGN=MIDDLE  ALT=\"150+\"   DISABLED_style= \"max-width:90%; height:auto;\" >of them indicated support for the policy, we have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=150%2F200=3%2F4=0.75 ALIGN=MIDDLE  ALT=\"p=150%2F200=3%2F4=0.75\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=95 ALIGN=MIDDLE  ALT=\"95\"   DISABLED_style= \"max-width:90%; height:auto;\" >% confidence=> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=1.96 ALIGN=MIDDLE  ALT=\"z=1.96\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "then, confidence interval for the true proportion of adults who support the policy is\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p%2B-z%2Asqrt%28p%281-p%29%2Fn%29 ALIGN=MIDDLE  ALT=\"p%2B-z%2Asqrt%28p%281-p%29%2Fn%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75%2B-1.96%2Asqrt%280.75%281-0.75%29%2F200%29 ALIGN=MIDDLE  ALT=\"0.75%2B-1.96%2Asqrt%280.75%281-0.75%29%2F200%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75%2B-0.06001249869818786 ALIGN=MIDDLE  ALT=\"0.75%2B-0.06001249869818786\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75%2B-0.06 ALIGN=MIDDLE  ALT=\"0.75%2B-0.06\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75-0.06=0.69 ALIGN=MIDDLE  ALT=\"0.75-0.06=0.69\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.75%2B0.06=0.81 ALIGN=MIDDLE  ALT=\"0.75%2B0.06=0.81\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "we are  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=95 ALIGN=MIDDLE  ALT=\"95\"   DISABLED_style= \"max-width:90%; height:auto;\" >% confident there will be between <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=69 ALIGN=MIDDLE  ALT=\"69\"   DISABLED_style= \"max-width:90%; height:auto;\" >% and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=81 ALIGN=MIDDLE  ALT=\"81\"   DISABLED_style= \"max-width:90%; height:auto;\" >% adults, with a margin of error of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.06 ALIGN=MIDDLE  ALT=\"0.06\"   DISABLED_style= \"max-width:90%; height:auto;\" >, who support the policy\r<BR>\n" );
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