PLEASE HELP ME OUT! I only need the answer for the last one since I've answered the others. Also, if you can please offer an explanation for why she exceeds/doesn't exceed, that would be great. Thank you and I really need the correct answer!

Precision Machinery has set standard times for its field representatives to perform certain jobs. The standard time allowed for routine maintenance is 2.5 hours (i.e., "standard output" =0.4 jobs per hour). One of Precision's field representatives records the results below. Calculate the rep's efficiency for each customer and her average efficiency. Calculate the rep's efficiency for each customer. Fill in the table below (enter your responses rounded to one decimal place). The rep's average efficiency is \%. (Enter your response rounded to one decimal place.) According to this measure of her performance, she the efficiency standard for performing routine maintenance