document.write( "Question 965656: There are 20 red checkers and 8 black checkers in a bag. Checkers
\n" ); document.write( "are selected one at a time, with replacement. Each time,the color of the checker is recorded. Find the probability of selecting a red checker exactly 8 times in 10 selections.\r
\n" ); document.write( "\n" ); document.write( "Please explain how to solve!
\n" ); document.write( "

Algebra.Com's Answer #590290 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Find the probability of choosing a red checker,
\n" ); document.write( "\"P%5BR%5D=20%2F28=5%2F7\"
\n" ); document.write( "So then the probability of not choosing a red checker is,
\n" ); document.write( "\"P%5BB%5D=2%2F7\"
\n" ); document.write( "Find the number of combinations for 8 red checkers in 10 selections.
\n" ); document.write( "\"C%2810%2C8%29=45\"
\n" ); document.write( "So then,
\n" ); document.write( "\"P=C%2810%2C8%29%2AP%5BR%5D%5E8%2AP%5BB%5D%5E2\"
\n" ); document.write( "\"P=45%2A%285%2F7%29%5E8%2A%282%2F7%29%5E2\"
\n" ); document.write( "\"P=%2845%2A390625%2A4%29%2F%28282475249%29\"
\n" ); document.write( "\"P=%2870312500%29%2F%28282475249%29\"
\n" ); document.write( "\"P=0.249\"
\n" ); document.write( "
\n" );