File: Lottaburger
a.  At the an α=0.05 level of service, can Lottaburger conclude that the speed of service is different across the four restaurants in the chain?
b.  If the chain concludes that there is a difference in speed of service, is there a particular restaurant the chain should focus its attention on? Use the appropriate test for multiple comparisons to support your decision. Use an α=0.05.