Answered: A fiber spinning process currently…

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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A fiber spinning process currently produces a fiber whose strength is normally distributed with a mean of 75 Pa. The minimum acceptable strength is 65Pa. If 10% of the fiber produced by the current method fails to meet the minimum specifications, what is the standard deviation of fiber strengths in the process? If the mean remains at 75 Pa, what must the standard deviation be so that only 1% of the fiber will fail to meet the specifications? Given that the standard deviation is 5Pa, to what value must be mean be set so that only 1% of the fiber will fail to meet the specifications?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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