Consider the accompanying data on breaking load kg25 mm widt

Consider the accompanying data on breaking load (kg/25 mm width) for various fabrics in both an unabraded condition (U) and an abraded condition (A). The dataset and the qqplot of the differences (U-A) is given below.

1. Now test the one-sided alternative from C using the Wilcoxon Signed-Rank test. Give the p-value and conclusion.

2. Which test (paired t or Wilcoxon Signed-Rank test) is appropriate? Justify your response.