The General Electric service department believes that the median time for a service call should be 30 or fewer minutes. To test this, the following random sample of service times was collected: Given that the managers do not wish to make the assumption that the population is normally distributed, the appropriate statistical test for testing about service times is:
A) the t-test.
B) the Kruskal-Wallis test.
C) the Wilcoxon signed rank sum test.
D) the F-test.

Question

The General Electric service department believes that the median time for a service call should be 30 or fewer minutes. To test this, the following random sample of service times was collected:  Given that the managers do not wish to make the assumption that the population is normally distributed, the appropriate statistical test for testing about service times is:
A) the t-test. 
B) the Kruskal-Wallis test. 
C) the Wilcoxon signed rank sum test. 
D) the F-test.

Quizplus · Accepted Answer

The Answer of The General Electric service department believes that the median time for a service call should be 30 or fewer minutes. To test this, the following random sample of service times was collected:  Given that the managers do not wish to make the assumption that the population is normally distributed, the appropriate statistical test for testing about service times is:
A) the t-test. 
B) the Kruskal-Wallis test. 
C) the Wilcoxon signed rank sum test. 
D) the F-test.

The General Electric Service Department Believes That the Median Time