find the test statisticfind p valueupper and lower bound

The mean waiting time at the ddvethrough of a fast-food restaurant from the time an order is placed to the time the order is received is 87.9 seconds. A ntahager devises a new drive-U1rou9h system mat he believes will decrease wail time. As a test, he initiates the new system at hIS restaurant and measures the wall time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. a Click the icon to View the table of correlation coefficient critical values