I think yes, alexa was ranked based on the traffic to a website, so the higher the AR is, the higher the webpage's position on GG SERP is.
But after submitting reviews in alexa,there is no change occurred in alexa rank .Then does it have any effect on SERP result?Because two days after submitting the reviews my google serp rank increases But I don't think so it happens because of the alexa reviews .Because I did many off page optimization techniques before it.also google takes months to view the results in serps na?