likelihood              Calculates the Log Likelihood
posterior               Calculates the posterior distribution for
                        Metropolis-MCMC
prior                   Calculates the Prior Distribution for
                        Metropolis-MCMC
proposalfunction        Proposal Distribution for Metropolis-MCMC
run_metropolis_MCMC     Runs the Metropolis-MCMC algorithm for weibull4
                        package
weibull4                weibull 4-parameters distribution building
                        function
weibull4.fit            Weibull 4-parameters Metropolis-MCMC non-linear
                        curve fitting function
worldCOVID              World's COVID-19 number of daily new deaths
