Answered: What is the point estimate? b) Develop…

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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Acid rain, caused by the reaction of certain air pollutants with rainwater,
appears to be a growing problem in Eastern Canada. Pure rain falling
through clean air registers a pH value of 5.7 (pH is a measure of acidity).
We know that the standard deviation σ for pH is 0,4. Suppose water
samples from 80 rainfalls are analyzed for pH, and ?̅is equal to 3.7 .
a) What is the point estimate?
b) Develop a 95 percent confidence interval for the population mean.
c) Interpret the confidence interval.

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