Recall the data set of soil compressibility measurements given in DS 6.6.6. Construct the empirical cumulative distribution

Question:

Recall the data set of soil compressibility measurements given in DS 6.6.6. Construct the empirical cumulative function for this data set. Use the sign test and the signed rank test to investigate whether the engineers can conclude that the average soil compressibility is no larger than 25.5.
Distribution
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