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 lowest-paid 10 percent made $8.01 an hour, while the highest-paid 10 percent earned $21.98 or more. However, because pizza delivery drivers earn tips and may be classified as wait staff by a restaurant, their actual hourly wages may be much lower than that.umber of Deliveries. The number of pizza or other food orders a driver can deliver in an hour varies. Most pizzerias and other restaurants limit drivers to a maximum delivery radius. The smaller the radius, the more deliveries drivers can make in an hour.