Question 1025363
{{{P(X)=C(6,X)*(0.9)^X*(0.1)^(6-X)}}}
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{{{P(0)=C(6,0)*(0.9)^0*(0.1)^(6)}}}
{{{P(0)=1*1*(1/10)^6}}}
{{{P(0)=1/1000000}}}
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{{{P(6)=C(6,6)*(0.9)^6*(0.1)^0}}}
{{{P(6)=1*(9/10)^6*1}}}
{{{P(6)=531441/1000000}}}
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{{{P(X>=4) =P(4)+P(5)+P(6)}}}
{{{P(X>=4) =C(6,4)*(0.9)^4*(0.1)^2+C(6,5)*(0.9)^5*(0.1)+531441/1000000}}}
{{{P(X>=4) =15(9/10)^4*(1/10)^2+6(9/10)^5*(1/10)+531441/1000000}}}
{{{P(X>=4) =98415/1000000+354294/1000000+531441/1000000}}}
{{{P(X>=4)  =984150/1000000}}}
{{{P(X>=4) =19683/20000}}}