A community psychologist selects a sample of 16 local police officers to test whether their physical endurance is better than the median score of74. She measures their physical endurance on a 100-point physical endurance rating scale.

Performance Scores:

87 77 90 59

81 82 95 89

76 86 75 91

97 67 96 61

Based on the data given above, compute the one-sample sign test at a 0.05 level of significance.

x=