A community psychologist selects a sample of 16 local police officers to test whether their physical endurance is better than the median score of 72. She measures their physical endurance on a 100-point physical endurance rating scale. Based on the data given below, compute the one-sample sign test at a .05 level of significance and state whether to retain or reject the null hypothesis.

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Performance Scores 75 82 86 80 76 90 92 70 68 95 73 50 81 65 85