TOC Standards. A laboratory quality assurance protocol calls for standard solutions having50 mg/L TOC to be randomly inserted into the work stream. Analysts are blind to thesestandards. Estimate the bias and precision of the 16 most recent observations on such stan-dards. Is the TOC measurement process in control?50.3 51.2 50.5 50.2 49.9 50.2 50.3 50.5 49.3 50.0 50.4 50.1 51.0 49.8 50.7 50.6

Sol:- To estimate the bias and precision of the TOC measurements, we can calculate the mean and…

Answered: TOC Standards. A laboratory quality…

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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It costs more to produce defective items—since they must be scrapped or reworked—than it does to produce non-defective items. This simple fact suggests that manufacturers should ensure the quality of their products by perfecting their production processes instead of depending on inspection of finished products (Deming, 1986). In order to better understand a particular metal stamping process, a manufacturer wishes to estimate the mean length of items produced by the process during the past 24 hours. a. How many parts should be sampled in order to estimate the population mean to within .2 millimeter (mm) with 95% confidence? Previous studies of this machine have indicated that the standard deviation of lengths produced by the stamping operation is about 2 mm. b. Time permits the use of a sample size no larger than 225. If a 95% confidence interval for m is constructed with n = 225, will it be wider or narrower than would have been obtained using the sample size determined in part a?…
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