I've hear on many occasions that Chinese prolong the last word in a sentence, for example:
ni hao ma ?
ni hao maaaaa ?
(I'm not sure that's clear enough but can't think of a better way to describe)
What is the purpose of this? Does it have any cultural meaning? What does it convey?
Edit: Perhaps I misunderstood, maybe it's 你好吗啊？ with the 啊 being longer than usual?