# (a) Interpretation: The value standard deviation during the determination of carbon monoxide in automotive exhaust gas is 0.030ppm on the basis of extensive past experience. The 90% confidence interval for triplicate analysis is to be determined. Concept introduction: The formula that will be used- C I , μ = x ¯ ± t s N Here, N = degree of freedom μ = confidence interval x ¯ = mean s = standard deviation t = constant ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213 ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

#### Solutions

Chapter A1, Problem A1.15QAP
Interpretation Introduction

## (a)Interpretation:The value standard deviation during the determination of carbon monoxide in automotive exhaust gas is 0.030ppm on the basis of extensive past experience. The 90% confidence interval for triplicate analysis is to be determined.Concept introduction:The formula that will be used-CI,μ=x¯±tsNHere,N = degree of freedomμ = confidence intervalx¯ = means = standard deviationt = constant

Interpretation Introduction

### Want to see the full answer?

Check out a sample textbook solution.

### Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. 