Question 1057500
Use the binomial distribution,
{{{P(X)=C(10,X)*(0.49^X)(1-0.49)^(10-X)}}}
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*[illustration lp9.JPG].
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a) {{{P(X=5)=0.2456}}}
b) At least 6 means 6 through 10.
{{{P(X>=6)=P(6)+P(7)+P(8)+P(9)+P(10)}}}
{{{P(X>=6)=0.3526}}}
c)Less than four mean 0 through 3.
{{{P(X<4)=P(0)+P(1)+P(2)+P(3)}}}
{{{P(X<4)=0.1888}}}