use the following scenario to answer the 4 questions. a bank with a

Use the following scenario to answer the 4 questions. A bank with a branch located in a commercial district of a city has developed an improved process for serving customers during the noon to 1 PM lunch period. The waiting time needs to be shortened to increase customer satisfaction. A random sample of 9 customers is selected, and stored in bank 1, the results, in minutes, are as follows:

4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20 4.50

Another branch is also concerned with the noon to 1 PM lunch period. A random sample of 10 customers is selected, and stored in bank 2, and the results, in minutes, are as follows:

9.66 5.90 8.02 5.79 8.73 3.82 8.01 8.35 10.49 6.68

Is there evidence of a difference in the median waiting time between the two branches? Use α = .05

5)
What is the hypothesis scenario?

6)
State n1, n2, and the critical values for the rejection regions.

7)
What is the Wilcoxon Rank Sum Test Statistic?

8)

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