Based on this data, which professor's course would you prefer to take? (I am aware that this is not necessarily the best data to use when making this choice, but it's the data you have.) Prof. X Prof. Y Prof. Z n = 18 n = 20 n = 25 92 96 89 78 95 88 92 88 85 92 90 87 77 81 81 72 81 79 61 78 78 75 73 74