First of all, the methodology is logistic regression. but, there are two ways to do the prediction: 1. select whole database as your targeted customers. In this case, since you only 1% response rate, the predicted probability won't be high (p_1 = 0.1 could be higher enough to say this guy will buy the ticket). 2. select part of your database as your targeted customers. In this case, you have to do pre data mining to reduce the data size and increase the response rate, then the predicted probability will increase too. keep in mind that either way will NOT keep all potential buyers. There is no way to cover all buyers except you communicate the whole database.
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