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Akhtar, S.; Sohail, A.; Tariq, U.; Khan, F.A.; Asghar, S. Willingness to pay for improved drinking water facility in Samsani Khui, Johar Town, Lahore, Pakistan.AAES2017,2, 187–193. [Google Scholar] Guilfoos, T.; Hayden, S.; Uchida, E.; Oyanedel-Craver, V. WTP for water...
Reliability Check To validate the reliability of the responses in the questionnaire, we used a statistical measure of confidence consistency, namely Cronbach's alpha coefficient, for a given sample. The coefficient formula is according to Equation (3), as indicated in [79]. α = K K − 1 ...