document.write( "Question 1115952: Based on past data, approximately 30% of the oil wells drilled in areas having a certain
\n" ); document.write( "favorable geological formation have struck oil. A company has identified 5 locations that
\n" ); document.write( "possess this information. Assuming that the chance of striking oil on any location is
\n" ); document.write( "independent of any others, calculate the probability that exactly 2 of the 5 wells strike oil.
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Algebra.Com's Answer #731000 by kasach(1)\"\" \"About 
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n=5 x=2
\n" ); document.write( "p=0.3
\n" ); document.write( "q=0.7
\n" ); document.write( "P(x) = n! * p^x * q^(n-x)
\n" ); document.write( " x! (n-x)!\r
\n" ); document.write( "\n" ); document.write( "P (x=2) = 5! * 〖0.3〗^2 * 〖0.7〗^(5-2)
\n" ); document.write( " 2! (5-2)!\r
\n" ); document.write( "\n" ); document.write( "P (x=2) = 5 *4*3*2*1 * 〖0.3〗^2 * 〖0.7〗^3
\n" ); document.write( " 2*1(3)!
\n" ); document.write( "P (x=2) = 10 * 0.09 * 0.343
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\n" ); document.write( " = 0.3087
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