Question: Let YN be a random array in f0;1gNN whose distribution is defined by first choosing C according to an exchangeable prior distribution and, given C,

Let YN be a random array in f0;1gNN whose distribution is defined by first choosing C according to an exchangeable prior distribution and, given C, taking YN to be relatively exchangeable with respect to C. Show that the marginal distribution of YN, after integrating over the prior distribution of C, is exchangeable.

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