Answered: Regulatory and Supervisory Bureau (RSB)…

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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Question

Regulatory and Supervisory Bureau (RSB) standards require that the amount of lead in drinking water be less than 10 μg/L. Eigtheen samples of water from a particular source yielded a mean lead content of 9.85 μg/L and a standard deviation of 0.4 μg/L. Assume that the amount of lead in drinking water is normally distributed. At 5% significance level, can you conclude that the water from this source meets the RSB standard? State the hypotheses, compute the test statistic (Round to two decimal places), find the p-value (Round to three decimal places) and state the conclusion

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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