H.S. Degree of Lower Some College College Degree or Higher Total
Worse off now 91 39 18 148
No difference 104 73 31 208
Better off now 235 48 161 444
Total 430 160 210 800
At a .05 level of significance, is there evidence of a relationship between financial condition and education level?
1) What is the Hypothesis Scenario?
2) Compute an "Expected Frequencies" table.
3) Compute the value of the chi-square test statistic.
4) What is the conclusion?
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) State your decision and conclusion.