A Copy Machine Service Company Provides Maintenance and Repair Service

Multiple Choice

A copy machine service company provides maintenance and repair service for different types and brands of copiers. The manager of the repair department wants to know if the repair time for brand A is higher than the repair time for brand B. The manager randomly selected eight repair records associated with brand A and eight repair records associated with brand B. The repair times (in minutes) for both samples are given below. The distribution of repair times for both brand A and brand B is highly skewed. On average, can it be concluded that the repair time for brand A is significantly higher than the repair time for brand B? Test at α = .05.

A) Reject the null hypothesis.
B) Fail to reject the null hypothesis.