document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172435>Question 1172435</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A study conducted on​ people's main source of news was based on 250 respondents between the ages of 36 to 50 years and  250 respondents who were over age 50. Of the 250 respondents who were between the ages of 36 and​ 50, 81 got their news primarily from newspapers. Of the 250 respondents who were over age​ 50, 157 got their news primarily from newspapers. Complete parts​ (a) through​ (d).\r<BR>\n" );
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document.write( "	36-50	Over 50	Total<BR>\n" );
document.write( "Yes	81	157	238<BR>\n" );
document.write( "No	169	93	262<BR>\n" );
document.write( "Total	250	250	500\r<BR>\n" );
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document.write( "b. What is the probability that an individual respondent is over 50 years​ old?\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 #797456 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=797456\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
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document.write( "	36-50	Over 50	Total\r\n" );
document.write( "Yes	81	157	238\r\n" );
document.write( "No	169	93	262\r\n" );
document.write( "Total	250	250	500\r\n" );
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document.write( "There are 250 people over age 50. Look at the bottom of the \"over 50\" column to see this total. Let A = 250.\r<BR>\n" );
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document.write( "There are 500 people overall (bottom right corner). Let B = 500.\r<BR>\n" );
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document.write( "The probability of picking someone over 50 is A/B = 250/500 = 1/2.\r<BR>\n" );
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document.write( "Answer: 1/2<BR>\n" );
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