To test the research's hypothesis, self-administered questionnaires were used on a total of 400 customers.
# To test the research's hypothesis, self-administered questionnaires were used on a total of 400 customers.
# To test the research's hypothesis, self-administered questionnaires were used on a total of 400 customers.
# To test the research's hypothesis, self-administered questionnaires were used on a total of 400 customers.