Question - XcomSoftware operates a 24-hour helpline to answer customer questions. To control the cost of operations, the company compares the actual time required to answer customer questions with a standard time of 6 minutes per customer call. Monthly bonuses are awarded if the standard is achieved. In the past five months, the number of calls has decreased from approximately6,000 calls to approximately 5,000. The average time per call has decreased from 6.5 minutes to 4.8 minutes. However, a software magazine recently gave the company a poor evaluation in an article that reviewed the support that software companies provide customers. Does a favorable variance for response time indicate good performance? What might account for the "improvement" in performance related to time per call and the poor rating of customer support?