7. The ER at the general hospital in Fake town Kingston had a notoriously long average wait time of 170 minutes. The hospital admin team implemented a number of changes and hired additional staff to try and bring the average wait time down. A year after the changes were made, an independent research group was hired to reassess the average wait time. Over the course of two months, they randomly selected a sample of 45 patients who visited the ER and recorded how long the patient had to wait. The average was 158 minutes with a standard deviation of 65 minutes. In your opinion, were the hospital admin team successful at reducing the average wait time at the ER? Justify your answer using the appropriate statistical methods. Be thorough; comparing just the means is not enough