How to calculate the (odd ,even) condition in the following Poisson distribution for p_z parameter? i need some help in the code bellow

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when q=[0.1,0.2,0.3,0.4,0.5] and p =1-q, z=6
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Torsten
Torsten 2019-7-12
编辑:Torsten 2019-7-12
function main
p1 = 0.9;
p2 = 0.8;
q1 = 1-p1;
q2 = 1-p2;
z = 6;
vec = zeros(1,z);
vec(1:2:end) = q1/p1;
vec(2:2:end) = q2/p2;
lambda = sum(vec);
terms_right = [1-fliplr(cumprod(vec)), 0];
terms_left = lambda.^(0:z)./factorial(0:z);
P_z = 1 - exp(-lambda)*sum(terms_left.*terms_right)
end

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