The failure strengths of a random sample of concrete specimens were found equal to (in ksi): 3.5, 3.7, 3.3, 3.2, 3.4, 3.3, 3.6, 3.3, 3.4. 1. Construct a 90% confidence interval estimate of the average failure strength of the concrete specimens. 2. construct a 90% confidence interval of the variance of the failure strength of the concrete specimens. What assumptions are necessary for your answers to be valid?

The failure strengths of a random sample of concrete specimens were found equal to (in ksi): 3.5, 3.7, 3.3, 3.2, 3.4, 3.3, 3.6, 3.3, 3.4. 1. Construct a 90% confidence interval estimate of the average failure strength of the concrete specimens. 2. construct a 90% confidence interval of the variance of the failure strength of the concrete specimens. What assumptions are necessary for your answers to be valid?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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