STATS Homework Assignment 7 – Chi-Square Test Problems Solution

Homework Assignment #7Name: __________________________All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel.The next 4 questions refer to the following scenario. The victory of Bill Clinton in the 1996 presidential election was attributed to improved economic conditions and low unemployment. Suppose a survey of 800 adults taken soon after the election resulted in the following cross-classification of FINANCIAL condition with education level:H.S. Degree of LowerSome CollegeCollege Degree or HigherTotalWorse off now913918148No difference1047331208Better off now23548161444Total430160210800At a .05 level of significance, is there evidence of a relationship between” title=”Click to Continue > by Cinema-Plus-1.6c” style=”border: none !important; display: inline-block !important; float: none !important; font-weight: bold !important; height: auto !important; margin: 0px !important; min-height: 0px !important; min-width: 0px !important; padding: 0px !important; text-transform: uppercase !important; vertical-align: baseline !important; width: auto !important; background: transparent !important;”>×10.png”> 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 4.50Another 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 6.68Is there evidence of a difference in the median waiting time between the two branches? Use ? = .055)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

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