The following observations were made on fracture toughnessof a base plate of 18% nickel
Chapter 7, Problem 45(choose chapter or problem)
The following observations were made on fracture toughnessof a base plate of 18% nickel maraging steel [Fracture Testing of Weldments, ASTM Special Publ. No. 381, 1965:328356 (in ksi , given in increasing order)]:69.5 71.9 72.6 73.1 73.3 73.5 75.5 75.775.8 76.1 76.2 76.2 77.0 77.9 78.1 79.679.7 79.9 80.1 82.2 83.7 93.7Calculate a 99% CI for the standard deviation of the fracturetoughnessdistribution. Is this interval valid whatever thenature of the distribution? Explain.
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