Customers can rate their service representative by completing a four-question survey at :he end of each call. Tiana entered the scores in columns Question 1. Question 2. Question 3. and Question 4 of the Calls table. She wants to calculate the average rating :or each call in the Average column. In cell J5, enter a formula using the AVERAGE :unction and structured references to average the values in the Question 1 to Question 4 :olumns of the Calls table. Fill the formula into the range J6:J143, if necessary