The table below shows ratings of 18 movies by two reviewers (on a 0 to 5 scale using half (increments). Research question: At α = .05, based on these data, is the rank correlation between reviewers significantly greater than zero (i.e., a right-tail test)?

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Reviewer Movie Bleck Death Blue Valentine No Strings Attached 25 9 Everything Must Go Fast Five From Prada to Nada 3.0 The Dvemma The Green Hornet The lusionist Justin Bieber Water for Elephants