Question 1098634
{{{P(X)=C(12,X)*(0.70)^X*(0.30)^(12-X)}}}
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*[illustration CK5.JPG].
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{{{P=P(10)+P(11)+P(12)}}}
{{{P=0.16779+0.07118+0.01384}}}
{{{P=0.253}}}