A batch of machine parts is considered acceptable if the
Chapter , Problem 6.62(choose chapter or problem)
A batch of machine parts is considered acceptable if the average tensile strength exceeds 41.0 x 106 N/m2 In a manufactured batch, 10 samples were tested and found to have an average strength of 41.25 x 106 N/m2, with a standard deviation of 0.30 x 106 N/m2. (a) Determine whether, with a 99% confidence level, the manufacturer can state that the product has an average strength exceeding 41.0 million N/m2 (b) Supposing that 20 samples are tested and yield the same statistics, answer the question in part (a).
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer