The General Electric Service Department Believes That the Median Time

Multiple Choice

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 critical value for the test about median service times, using a .05 level of significance, is:

A) 5
B) 40
C) 8
D) 37