I believe it can - indirectly.
Answering questions can draw attention to you and also help gain exposure to your hubs. This way, people who read your answer(s) may be encouraged to look at work you have produced in your own hubs and vote to increase the scores in those hubs.
This doesn't always work, but HubPages works a bit like a community and for those who don't have experience with guiding traffic in from places like Google and other search engines, traffic from within HubPages can increase the hits on their hubs and possibly the scores too.
Hope this answers your question.