Use Appendix Table A.3 to answer the following. The Rockwell hardness of a metal isdetermined by impressing a hardened point into the surface of the metal and then measuring the depth of penetration of thepoint. Suppose the Rockwell hardness of a particular alloy is normally distributed with mean 70 and standard deviation 3.(a) If a specimen is acceptable only if its hardness is between 67 and 75, what is the probability that a randomly chosenspecimen has an acceptable hardness?(b) What is the probability that a randomly chosen specimen has a hardness over 80?(c) If the acceptable range of hardness is (70c, 70+ c), for what value of c would 95% of all specimens have acceptablehardness?

It is given that Mean, μ = 70 Standard deviation, σ = 3

Answered: use ) If a specimen is acceptable only…

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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