Students who watch the 711 recorded lectures at original speed score an average of 88% on the exams. Students who slow down the lectures claim that their exam scores are higher. ---- c) The above scenarios are phrased as "one sided" alternatives. However investigators often use a two side alternative to be conservative - even when they expect a result in a certain direction. Rephrase the scenario in part b) to indicate a two sided alternative - and rewrite the null and alternative for that two sided scenario.in words and symbols