Answered: For each of the studies, identify the…

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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Question

For each of the studies, identify the
source(s) of sampling bias and describe (i) how it might
affect the study conclusions and (ii) how you might alter
the sampling method to avoid the bias.

(a) Eight hundred volunteers were recruited from
nightclubs to enroll in an experiment to evaluate a
new treatment for social anxiety.

(b) In a water pollution study, water specimens were
collected from a stream on 15 rainy days.

(c) To study the size (radius) distribution of scrub oaks
(shrubby oak trees), 20 oak trees were selected by
using random latitude/longitude coordinates. If the
random coordinate fell within the canopy of a tree,
the tree was selected; if not, another random location
was generated.

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