The additive in gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20 and 0.11 ppm, the confidence interval at 99% confidence level would be: (t = 4.03) o 0.15 ±0.04 ppm O 0.15 ± 0.02 ppm O 0.15 ± 0.03 ppm O 0.15± 0.08 ppm O 0.15 ± 0.06 ppm

The additive in gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20 and 0.11 ppm, the confidence interval at 99% confidence level would be: (t = 4.03) o 0.15 ±0.04 ppm O 0.15 ± 0.02 ppm O 0.15 ± 0.03 ppm O 0.15± 0.08 ppm O 0.15 ± 0.06 ppm

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

ChapterA1: Evaluation Of Analytical Data

Section: Chapter Questions

Problem A1.15QAP

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Question

The additive in gasoline was
measured six times with the
following results: 0.13, 0.12, 0.16,
0.17, 0.20 and 0.11 ppm, the
confidence interval at 99%
confidence level would be: (t
= 4.03)
o 0.15 ±0.04 ppm
O 0.15 ± 0.02 ppm
O 0.15 ± 0.03 ppm
O 0.15± 0.08 ppm
O 0.15 ± 0.06 ppm

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