single-blind study. single-blind study. Etymology: L, singulus, one by one; AS, blind + L, studere, to be busy. an experiment in which the person collecting data knows whether the subject is in the control group or the experimental group, but subjects do not. See also double-blind study.
The suit alleges that Pizza Hut's mandatory delivery fees give customers the impression that they are part of the tip, but drivers receive no portion of it, says the Associated Press.he Hut isn't the only pizza chain to get backlash from employees on shady fee practices: Last year, U.K. chain Pizza Express came under fire for keeping 8 percent of its workers' credit card tips, which it claimed was to cover credit card processing fees.
The vast majority of Domino's customers understand the additional costs associated with delivery, and are willing to pay the extra money for the convenience of delivery to their homes, he said. There is a message to consumers on the pizza box, which is there at the request of a number of drivers.he delivery fees hurt our tips, and our tips are the main reason we do this job. I'd love to see them go away.. The fees aren't just the subject of online posts from drivers like Maschok -- they're now the subject of lawsuits.