Investing in equal parts of these three dividend stocks should produce an average yield of 4.8% to help you generate passive income.When dividend-paying companies go on sale, their yields increase, which can make them juicy passive income opportunities. But a dividend is only as good as the company paying it; meaning if you're going to invest in a beaten-down dividend-paying company, it has to be able to overcome whatever challenges it is going through.United Parcel Service (UPS 0.06%) and Devon Energy (DVN ...