function [loglikeval] = loglike4(p,data)
% Log likelihood function for data 1 
%   inputs: p - paramerters of weibull alpha & beta 
%          data - matrix of data
%   outputs: loglikeval - the negative value of the likelihood function

% assign parameters
alpha = 

% assign data
t = data(:,1);
x = 

%likelihood function
loglikeval = -sum(  );
end

