The defect length of a corrosion defect in a pressurized steel pipe is normally distributed with mean value 30 mm and standard deviation 7.2 mm.USE SALT(a) What is the probability that defect length is at most 20 mm? Less than 20 mm? (Round your answers to four decimal places.)at most 20mmless than 20mm(b) What is the 75th percentile of the defect length distribution-that is, the value that separates the smallest 75% of all lengths from the largest 25%? (Round your answer to four decimal places.)mm(c) What is the 15th percentile of the defect length distribution? (Round your answer to four decimal places.)mm(d) What values separate the middle 80% of the defect length distribution from the smallest 10% and the largest 10%? (Round your answers to four decimal places.)smallest 10%largest 10%mmmm

given data, normal distriubutionμ=30σ=7.2we have to find out the given probabilties.

Answered: The defect length of a corrosion defect…

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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