document.write( "Question 1176390: A raffle advertises that ”1 out of every 10 tickets is a winner!” You buy 30 tickets,
\n" ); document.write( "none of which are winners. Assuming that the claim is actually true, what is the
\n" ); document.write( "probability that you would have less than 1 winning ticket in a sample of 30 tickets?
\n" ); document.write( "What does this tell you about the claim that the people who are running the raffle
\n" ); document.write( "are making?
\n" ); document.write( "

Algebra.Com's Answer #803154 by ikleyn(52794)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Less than one winning ticket is the same as \"NO winning tickets\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The probability to have zero winning tickets among 30 bought tickets is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    P = \"0.9%5E30\" = 0.0424.     ANSWER\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It says that the probability to win  having 30 randomly chosen tickets is\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "    P' = 1 - 0.0424 = 0.9576,\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "which is quite high probability.\r\n" );
document.write( "
\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );