The owners of Big Boy Burgers are considering remodeling their facility to include a drive-thru window.

A key factor in determining how to design the drivethru is the distribution of customer service times. The Big Boy owners have received service time data from a similar operation in another city. The data in the file called Big Boy reflect the service time per car.

Based on these sample data, is there sufficient evidence to conclude that the service times are not normally distributed? Test using the chi-square distribution and a = 0.05.