if this distribution can be a priori why cannot it be a mixture how to show which distributions are exchangeable? which parameter of the prior distribution cannot be exchangeable? what kind of distribution does the j model have is the prior distribution a mixture of iid$ components and not exchangeable? why is this prior distribution not exchangeable what is a priori distribution can an exchangeable distribution be a priori which parameter is exchangeable are the parameters of the prior distribution exchangeable which parameters are not exchangeable in the prior distribution? is the distribution of the parameters $theta_1ldots,theta_2J$ exchangeable? is a prior distribution exchangeability which two distribution parameters are exchangeable is prior distribution exchangeable or not is theta_1 and ldots are exchangeable are the parameters of the prior distribution exchangeable? is each parameter of the prior distribution exchangeable for each other is this prior distribution exchangeable what is the prior distribution