1) A metallurgist wants to determine the degree of homogeneity in a sample of a metal alloy. The concentration of manganese, a trace component of the alloy, is measured as sevrnl loations in the sample. The results are given below, in units of ppm by mass (parts per million by mas). 245. ppm 223. ppm 266. ppm 253. ppm 255. ppm 241. ppm 270. ppm 236. ppm 259. ppm Find the average concentration of manganese in the alloy (in ppm), and the 95% confidence limits for the average value.

1) A metallurgist wants to determine the degree of homogeneity in a sample of a metal alloy. The concentration of manganese, a trace component of the alloy, is measured as sevrnl loations in the sample. The results are given below, in units of ppm by mass (parts per million by mas). 245. ppm 223. ppm 266. ppm 253. ppm 255. ppm 241. ppm 270. ppm 236. ppm 259. ppm Find the average concentration of manganese in the alloy (in ppm), and the 95% confidence limits for the average value.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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