MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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HW11Q8B

X1
The table to the right contains observed values and expected values in
parentheses for two categorical variables, X and Y, where variable X has
three categories and variable Y has two categories. Use the table to
complete parts (a) and (b) below.
X2
X3
33
40
49
Y1
(34.96)(43.18)(43.87)
18
23
15
Y2
(16.04)(19.82)(20.13)
Click the icon to view the Chi-Square table of critical values.
(a) Compute the value of the chi-square test statistic.
= 3.001 (Round to three decimal places as needed.)
(b) Test the hypothesis that X and Y are independent at the a = 0.1 level of significance.
A. Ho: The Y category and X category have equal proportions.
H1:
The proportions are not equal.
B. Ho: Hx = Ex and Hy = Ey
H1: Hx # Ex or Hy #Ey
%3D
O c. Ho: The Y category and X category are dependent.
H1: The Y category and X category are independent.
D. Ho: The Y category and X category are independent.
H1: The Y category and X category are dependent.
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Transcribed Image Text:X1 The table to the right contains observed values and expected values in parentheses for two categorical variables, X and Y, where variable X has three categories and variable Y has two categories. Use the table to complete parts (a) and (b) below. X2 X3 33 40 49 Y1 (34.96)(43.18)(43.87) 18 23 15 Y2 (16.04)(19.82)(20.13) Click the icon to view the Chi-Square table of critical values. (a) Compute the value of the chi-square test statistic. = 3.001 (Round to three decimal places as needed.) (b) Test the hypothesis that X and Y are independent at the a = 0.1 level of significance. A. Ho: The Y category and X category have equal proportions. H1: The proportions are not equal. B. Ho: Hx = Ex and Hy = Ey H1: Hx # Ex or Hy #Ey %3D O c. Ho: The Y category and X category are dependent. H1: The Y category and X category are independent. D. Ho: The Y category and X category are independent. H1: The Y category and X category are dependent.
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