A customer

Acusto mer service department asks its customers to rate their overthephone service on a scale of 120 immediately after Their service has been completed. The department then matches each customer's rating with the number of minutes the person waited on hold. The accompanying table shows the ratings and number of minutes on hold for 10 randomly selected customers. The regression line for the data is 5r =16.2?? - 0.3T3x. Use this information to complete parts a through d. a Click the icon to View the table showing ratings and number of minutes on hold for 10 customers. 4]. Calculate the coefcient of determination. F:2 = (Round to three decimal places as needed.)