3.1. 3.7.1. The validity of the QuestionnaireThe face and content validity of this questionnaire was assessed by consulting experts, the supervisor and theadvisor. The questionnaire has construct validity because it is based on Servqual model with all its dimensionsincluded.3.2. 3.7.2. The reliability of the questionnaireThe reliability was estimated via Cronbach alpha (perceptions 96% and expectations 93%) by SPSS software.
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