How can I fix this error?

I followed the written code literally but it still says there is an error in line 4 y = finitepmf(s,p,x);

Therefore, I could not have the answer

>> shipweightpmf( [2 2.5 6] )'

ans = 0.1500 0 0.1000

that is written in the second box of the example picture that it has been attached.

Any hints or details explaination are highly appreciated.

function y = shipweightpmf(x)
s = (1:8)';
p = [0.15*ones(4,1); 0.1*ones(4,1)];
y = finitepmf(s,p,x);

Answer 1

[VBBV]

shipweightpmf( [2 2.5 6] )' 

ans = 1×3

0.1500 0 0.1000

function y = shipweightpmf(x)
s = (1:8)';
p = [0.15*ones(4,1); 0.1*ones(4,1)];
y = finitepmf(s,p,x);
end

function pmf=finitepmf(sx,px,x) 
% finite random variable X: 
% vector sx of sample space 
% elements {sx(1),sx(2), ...} 
% vector px of probabilities 
% px(i)=P[X=sx(i)] 
% Output is the vector 
% pmf: pmf(i)=P[X=x(i)] 
    pmf=zeros(size(x(:))); 
    for i=1:length(x) 
        pmf(i)= sum(px(find(sx==x(i)))); 
    end
end

[VBBV]

Use these links below for more information about that function (probability mass function)

http://homes.ieu.edu.tr/tince/Math218_MATLAB_examples.pdf

https://in.mathworks.com/matlabcentral/answers/627263-how-to-find-probability-mass-function