(Based on exercise 9.8 in the textbook) Suppose a bank manager has developed a new system to reduce customer wait time at branches for teller services. She obtains a sample of 1 00 customer wait times, and calculates the sample mean wait time to be 5.65 minutes. She knows that the population standard deviation is 1.20 minutes. Calculate a 95% confidence interval for the population mean wait time. Enter the lower bound below, rounded to 2 decimal places