Estimating a probability given other probabilities from a prior

Question

I have a bunch of data coming in (calls to an automated callcenter) about whether or not a person buys a particular product, 1 for buy, 0 for not buy.

I want to use this

Answer 1

As I see it, the best you could do is use the uniform distribution, unless you have some clue regarding the distribution. Or are you talking about making a relationship between this products and products previously bought by the same person in the Amazon Fashion "people who buy this product also buy..." ??