question about speed of sound traveling through warm vs cold + properties

[mrh125]

I've read that the speed of sound is faster in warm air than cold air, but cold air is more dense than warm air. i thought density of the medium/the medium's resistance to perturbations was correlated with a faster speed of sound. Can someone explain this discrepancy? Is sound really faster in warm air or did i reverse it?

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[brood910]

I answered to this question here http://forums.studentdoctor.net/threads/light-and-sound-waves-question.1059772/