document.write( "Question 945044: Of 41 bank accounts at small bank, 21 accounts have values of less than $1000 and the rest have values of at least $1000. Suppose 5 accounts are randomly sampled. \r
\n" ); document.write( "\n" ); document.write( "What is the probability that exactly 4 of the 5 accounts have values of at least $1000? \r
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Algebra.Com's Answer #576364 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
The probability of an account having less than $1000 is
\n" ); document.write( "\"P=21%2F41\"
\n" ); document.write( "So the probability of an account having at least $1000 is
\n" ); document.write( "\"P=1-21%2F41=41%2F41-21%2F41=20%2F41\"
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\n" ); document.write( "Choosing 5 at random and having exactly 4 at least $1000 (Y) and 1 less than $1000 (X), gives you 5 possible outcomes.
\n" ); document.write( "XYYYY
\n" ); document.write( "YXYYY
\n" ); document.write( "YYXYY
\n" ); document.write( "YYYXY
\n" ); document.write( "YYYYX
\n" ); document.write( "So then the probability would be,
\n" ); document.write( "\"P=5%2A%2820%2F41%29%5E4%2A%2821%2F41%29\"
\n" ); document.write( "\"P=5%2A.0566%2A0.5122\"
\n" ); document.write( "\"P=0.145\"\r
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