Answered: Which test again? For each of 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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Which test again? For each of the following situations,
state whether you’d use a chi-square goodness-of-fit test,

a chi-square test of homogeneity, a chi-square test of in-
dependence, or some other statistical test:

a) Is the quality of a car affected by what day it was
built? A car manufacturer examines a random sample
of the warranty claims filed over the past two years to
test whether defects are randomly distributed across
days of the work week.

b) A medical researcher wants to know if blood choles-
terol level is related to heart disease. She examines a

database of 10,000 patients, testing whether the cho-
lesterol level (in milligrams) is related to whether or

not a person has heart disease.
c) A student wants to find out whether political leaning
(liberal, moderate, or conservative) is related to choice
of major. He surveys 500 randomly chosen students
and performs a test.

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