ATUW Motors is planning to replace the brake pad of its cars with a similar quality brake pads but cheaper. This is part of the company strategy to cut costs but wants to maintain the quality of its cars and parts. The variance of the existing brake pads life time is 29.2 months. A random sample of 24 cars gave a sample variance of 27.6 months. Determine if the new brake pads performs as better as the existing brake pads