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Researchers surveyed samples of freshmen studentsand senior students about their spending habits. Amongseveral questions, they asked the students how much they spent on fast food during the past week. Here is a sum-mary of the responses:Which best describes the two variables in this study,money spent on fast food and high school class?A) Disjoint and independentB) Disjoint but not independentC) Independent but not disjointD) Neither independent nor disjointE) Independence cannot be determined because thesample sizes are unequal. *$10 $10–20 +$20 TotalFreshmen 23 12 8 43Seniors 25 19 28 72Totals 48 31 36 115

Researchers surveyed samples of freshmen studentsand senior students about their spending habits. Amongseveral questions, they asked the students how much they spent on fast food during the past week. Here is a sum-mary of the responses:Which best describes the two variables in this study,money spent on fast food and high school class?A) Disjoint and independentB) Disjoint but not independentC) Independent but not disjointD) Neither independent nor disjointE) Independence cannot be determined because thesample sizes are unequal. *$10 $10–20 +$20 TotalFreshmen 23 12 8 43Seniors 25 19 28 72Totals 48 31 36 115

MATLAB: An Introduction with Applications
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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Researchers surveyed samples of freshmen students
and senior students about their spending habits. Among
several questions, they asked the students how much they
spent on fast food during the past week. Here is a sum-
mary of the responses:Which best describes the two variables in this study,
money spent on fast food and high school class?
A) Disjoint and independent
B) Disjoint but not independent
C) Independent but not disjoint
D) Neither independent nor disjoint
E) Independence cannot be determined because the
sample sizes are unequal.
*$10 $10–20 +$20 Total
Freshmen 23 12 8 43
Seniors 25 19 28 72
Totals 48 31 36 115
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