Answered: To assess the accuracy of al laboratory…

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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To assess the accuracy of al laboratory scale, a standard weight that Is known to weigh 1 gram is repeatedly weighed a total of n times and mean of the weighing is computed.Suppose the scale readings are normally distributed with an unknown mean and standard deviation =0.01 grams. How large should n be so that a 95% confidence interval for mu has a margin error of 0.0001 or less?

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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