Now let us say we want to know where the source of this variance is coming from (which group(s) is/are the most different from others), so we decide to see if there is a difference in number of IG FOLLOWERS, JUST between Sophomore and Sr. So, test this new hypothesis: there is a difference in number of IG FOLLOWERS between Sophomore and Sr. What is the correct statistical test (specifically in Excel) that you should use to measure this hypothesis and is it 1 tail or 2 tail?

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