In a small town, there are two fast food restaurants that serve chicken sandwiches: Chickenorama and Sandwichopolis. A local citizen believes that the two restaurants have different mean wait times...

In a small town, there are two fast food restaurants that serve chicken sandwiches: Chickenorama and Sandwichopolis. A local citizen believes that the two restaurants have different mean wait times the time between when a customer's order is placed and when the order is fulfilled. A random sample of 50 customers selected from Chickenorama had a mean wait time of 4.3 minutes with a standard deviation of 3.7 minutes. A random sample of 45 customers selected from Sandwichopolis had a mean wait time of 5.3 minutes with a standard deviation of 3.2 minutes. Construct and interpret a 90% confidence interval for the difference in mean wait times between the two restaurants. Does the confidence interval in part (a) support the citizen's belief that the two restaurants have different mean wait times? Explain.