Answered: Contaminated water: in a sample of 42…

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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Contaminated water: in a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead.

a) construct a 99.8% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answer to at least three decimal places.

A 99.8% confidence interval for the proportion of water specimens that contain detectable levels of lead is ----< p < -----

2) A college admissions officer sampled 108 entering freshman and found that 34 of them scored less than 600 on the math SAT. Round to at least three decimal places.

The point estimate for the proportion of all entering freshman at this college who scored less than 600 on the math SAT is:

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