document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=700944>Question 700944</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine if this study is experimental or observational:<BR>\n" );
document.write( "One group of rats is exposed to radiation, while another is not; both groups are then monitored for their incidence of cancer. <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 #432213 by </B><A HREF=/tutors/aboutme.mpl?userid=neatmath><B>neatmath(302)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=neatmath><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=neatmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=432213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><font face=\"Tahoma\">I believe this would definitely be an experimental study.<br>\r<BR>\n" );
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document.write( "The reason is that the researchers would be directly influencing the subjects,<br>\r<BR>\n" );
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document.write( "and then sorting them into non-random groups.<br>\r<BR>\n" );
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document.write( "Observational studies on the other hand,<br>\r<BR>\n" );
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document.write( "never directly influence the subjects.<br>\r<BR>\n" );
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document.write( "Researchers just observe what is already happening in nature, or in the field, and even in the laboratory.<br>\r<BR>\n" );
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document.write( "Experimental studies can have huge ethical implications, especially when the subjects are humans or animals.<br>\r<BR>\n" );
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document.write( "I hope this helps!  Keep practicing!  :)<br>\r<BR>\n" );
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