Sorry, I don't think this will completely answer your question, but let me give my stats (wow. I like how I just made us sound like cars in a video game. Or players in FIFA or whatever), then some anecdotal evidence that supports the idea that it is normal. read more
Specific functions may be left-dominant or right-dominant, but one person might be both left-handed and right-footed, for example. According to the Wikipedia page on footedness, "Over 90% of right-handers are also right-footers; right-footedness hence predominates in the general population. read more