Answer it correctly please. I will rate accordingly with multiple votes. This is my last attempt. Please do it correctly.

A pizza delivery driver, always trying to increase tips, runs an experiment on his next 40 deliveries, all of which will be made on the same warm, sunny day. He flips a coin to decide whether or not to call a customer from his mobile phone when he is five minutes away, hoping this slight bump in customer service will lead to a slight bump in tips. After 40 deliveries, he will compare the average tip percentage between the customers he called and those he did not. Name some variables the driver controlled. Was the experiment randomized and replicated? Name some variables the driver controlled. Select all that apply A. Distance from restaurant to customer B. Season [ C. Gender of customer D. Social class of customer E. Price of pizza F. Day of the week G. Weather OH. Type of pizza