A locally owned coffee shop claims that the mean waiting time for its costumers to be served is the lowest in the city. A national chain of coffee shops checks the waiting times at one of their shops to compare it with the locally owned one. The results of the study are shown below Local Coffee shop national chain n1=24 n2=26 x1¯=5.3 minutes x2¯=5.7 minutes s1=0.78 minutes s2=0.9 minutes Test the local coffee shop's claim using α=0.05, and assuming the variances are equ

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