$.$ Consider another targeting strategy where we want to send the promotion to $20\%$

of customers. We want to maximize our incremental revenue, but we want to make sure that

we do not discriminate against minorities. In particular, if X$\%$ of the customers in our dataset

are minorities, we want to make sure that at least X$\%$ of those who receive the promotion are

minorities.

a$.$ How do you choose the $20\%$ of customers that satisfy these criteria?

b$.$ What is the predicted incremental revenue from this targeting strategy?