document.write( "Question 236927: What is the probability that it will rain 2 of the next 10 days when the probability of rain is 90%? Show the formula and your calculations. \n" ); document.write( "
Algebra.Com's Answer #174270 by stanbon(75887)\"\" \"About 
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What is the probability that it will rain 2 of the next 10 days when the probability of rain is 90%? Show the formula and your calculations.
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\n" ); document.write( "It's binomial with n = 10, p = 0.9, x = 2
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\n" ); document.write( "P(x=2) = 10C2(0.9)^2(0.1)^8 = 0.0000003645
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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