Question 1124584
{{{P(X)=C(6,X)*(0.1)^X*(1-0.1)^(6-X)}}}
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a) {{{P(X=3)=0.0146}}}
b) {{{P(X<=3)=P(0)+P(1)+P(2)+P(3)=0.9987}}}
c) {{{P(X>3)=P(4)+P(5)+P(6)=0.00127}}}
d) Use the complement,
{{{P(X>=1)=1-P(0)=0.469}}}