The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Mon
Posted: Sun Sep 05, 2021 5:14 pm
The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the mean waiting time: Waiting time | Number of (minutes) Customers 0-3 4-7 13 8-11 14 12 - 15 8 16 - 19 6 20 - 23 3 24 - 27 3 14 13.5 9.7 8.7 9.5