1. You are a RN working in a substance abuse clinic and you are interested in assessing carbohydrate deficient transferria (CDT) because CDT is a marker for alcohol abuse. You evaluated paired serum (S) and dry blood spot (DBS) specimens simultaneously for CDT in 25 clients randomly selected at the clinic. The data (in densitometry units - DU) are provided in the table below. You would prefer use of dry blood spots for analysis of CDT because it involves simplified sampling, storage, and transportation of specimens compared to serum (S) specimens (currently used to assess CDT). Use the data set below to answer the following questions. Assume =0.05.