Grain detection 0.8 Peak To Valley Histogram 2.5 unit/div 30 10 20 30 nm Peak to Valley Zoum: 100% 48 12 I nm D3 40 30 20 10 0 VY 0.4 0.8 1.2 1.6 μη Zoom: 100% +x - I DE Line Profile: Red nm 30 20 10 - 224 1:1 Angle (deg): I 0 0 0.4 0.8 1.2 1.6 2 μm Cursor Red AX(μm) 0.047 AY(nm) 18.405 Angle(deg) 21.437 Power Spectrum: Red - 224 μm³ 1.6E-5 1.2E-5 8E-6 4E-6 0 что 0 20 40 60 1/μm

Grain detection 0.8 Peak To Valley Histogram 2.5 unit/div 30 10 20 30 nm Peak to Valley Zoum: 100% 48 12 I nm D3 40 30 20 10 0 VY 0.4 0.8 1.2 1.6 μη Zoom: 100% +x - I DE Line Profile: Red nm 30 20 10 - 224 1:1 Angle (deg): I 0 0 0.4 0.8 1.2 1.6 2 μm Cursor Red AX(μm) 0.047 AY(nm) 18.405 Angle(deg) 21.437 Power Spectrum: Red - 224 μm³ 1.6E-5 1.2E-5 8E-6 4E-6 0 что 0 20 40 60 1/μm

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter8: Sampling, Standardization, And Calibration

Section: Chapter Questions

Problem 8.12QAP

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A titrimetric method for the determination of calcium in limestone was tested by analysis of an NIST limestone containing 30.15% CaO. The mean result of four analyses was 30.26% CaO, with a standard deviation of 0.085%. By pooling data from several analyses, it was established that s   = 0.094% CaO.a. Do the data indicate the presence of a systematic error at the 95% confidence level?b. Do the data indicate the presence of systematic error at the 95% confidence level if no pooled value for s was available?
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