1. The manager of a local fast-food chain wants to improve the service provided to customers who use the drive-up window. As a first step in this process, the manager records how long it takes from the time the customer first enters the drive-in window until they are served their food at the final window. Below are the times (in minutes) for the 30 customers (in order):
 Calculate the median.  
 Calculate the first and third quartile.  
 Calculate the interquartile range.  
 Calculate the lower and upper limits  
 List all outliers. Explain why they would be considered outliers.