Delta Air Lines Wants to Determine If the Number of No-Shows

question 6

Multiple Choice

Delta Air Lines wants to determine if the number of no-shows for flights originating from Detroit is higher than from Minneapolis. A sample of 20 flights from each city is taken and the number of no-shows is determined for each flight. Which nonparametric test would you use to determine whether the number of no-shows is greater in Detroit?

• A)Wald-Wolfowitz one-sample runs test
• B)Wilcoxon signed-rank test
• C)Wilcoxon rank sum (Mann-Whitney) test
• D)Kruskal-Wallis test

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