The Charpy V-notch (CVN) technique measures impact energy and is often used to determine whether or not a material experiences a ductile-to-brittle transition with decreasing temperature. Ten measurements of impact energy (in J) on specimens of steel cut at 60° C are as follows: 62.8,63.2,64.7,63.0,65.3,63.6,66.0,64.7,63.9,62.5 a) Find a 95% CI for μ, the mean impact energy for that kind of steel. [Number Number 1 (Enter your answer correct to 2 decimal places) b) Determine the minimum number of specimens so that we are 95% confident of estimating mean impact energy to within 0.4 Jof its correct value. Use the sample standard deviation from the above data as an initial guess of the value for the true standard deviation Number (Enter your answer as an integer)

The Charpy V-notch (CVN) technique measures impact energy and is often used to determine whether or not a material experiences a ductile-to-brittle transition with decreasing temperature. Ten measurements of impact energy (in J) on specimens of steel cut at 60° C are as follows: 62.8,63.2,64.7,63.0,65.3,63.6,66.0,64.7,63.9,62.5 a) Find a 95% CI for μ, the mean impact energy for that kind of steel. [Number Number 1 (Enter your answer correct to 2 decimal places) b) Determine the minimum number of specimens so that we are 95% confident of estimating mean impact energy to within 0.4 Jof its correct value. Use the sample standard deviation from the above data as an initial guess of the value for the true standard deviation Number (Enter your answer as an integer)

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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