Moderate
Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline's sample experience with the three types of instruments one may use____________?
Correct answer: D. Kruskal-Wallis test
- A. Kolmogorov-Smirnor test
- B. Wilcoxon Rank-Sum test
- C. Spearman Rank Correlation test
- D. Kruskal-Wallis test
Explanation
The three firms provide three independent groups whose failure-time distributions or locations are being compared. Kruskal-Wallis extends the rank-sum approach from two groups to three or more, so it is the appropriate choice.
Last updated
Practise Hypothesis Testing
24 free Hypothesis Testing MCQs from Statistics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Statistics questions like this
Statistics is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.