document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181159>Question 1181159</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Based on a​ poll, ​70% of Internet users are more careful about personal information when using a public​ Wi-Fi hotspot. What is the probability that among four randomly selected Internet​ users, at least one is more careful about personal information when using a public​ Wi-Fi hotspot? How is the result affected by the additional information that the survey subjects volunteered to​ respond?\r<BR>\n" );
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document.write( "The probability that at least one of them is careful about personal information is ____.<BR>\n" );
document.write( "​(Round to three decimal places as​ needed.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811027 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=811027\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At least one is the same as saying 1-none.<BR>\n" );
document.write( "That is 1-0.3^5=0.99757 or 0.998<BR>\n" );
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document.write( "If they volunteered for the survey, it is likely that they would be likely to say they are more careful about personal information.   </SPAN>\n" );
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