Answer only letter b Three different analytical methods are compared for determining Ca in abiological sample. The laboratory is interested in knowing whether the methods differ.The results shown below represent Ca results in ppm determined by an ion-selectiveelectrode (ISE) method, by EDTA titration, and by atomic absorption spectrometry:Repetition No.2345ISE39.232.841.835.333.5EDTATitration29.928.721.734.039.2AtomicAbsorption44.049.235.139.745.9a.State the null and alternative hypotheses.b. Determine whether there are differences in the three methods at the 95%and 99% confidence levels.c. If a difference was found at the 95% confidence level, determine whichmethods differ from each other.

The Ca results are given in ppm. The results are determined by three methods. The three methods…

Answered: Three different analytical methods are…

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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A sample of 10 diesel trucks were run both hot and cold to estimate the difference in fuel economy. The results, in mpg. are presented in the following table. (From "In-use Emissions from Heavy-Duty Diesel Vehicles," J. Yanowitz, Ph.D. thesis, Colorado School of Mines, 2001.) Truck Hot Cold 4.56 4.26 2 4.46 4.08 3 6.49 5.83 5.37 4.96 5 6.25 5.87 6 5.90 5.32 4.12 3.92 8 3.85 3.69 4.15 3.74 10 4.69 4.19 Find a 98% confidence interval for the difference in mean fuel mileage between hot and cold engines.
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