Question 183151: Hi,
Can you please help me solve for this, Doane−Seward: Applied Statistics in Business and Economics, ch. 15:
Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At α = .01, is the degree of certainty independent of credits earned?
Credits Earned Very Uncertain Somewhat Certain Very Certain Row Total
0–9 12 8 3 23
10–59 8 4 10 22
60 or more 1 7 11 19
Col Total 21 19 24 64
(This format is cramming the numbers together to make it easier Credits erned: 0-9, Very uncertain: 12, Somewhat certain: 8, Very certain: 3, Row Total: 23.)
Thank you
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At α = .01, is the degree of certainty independent of credits earned?
Credits Earned Very Uncertain Somewhat Certain Very Certain Row Total
0–9 12 8 3 23
10–59 8 4 10 22
60 or more 1 7 11 19
Col Total 21 19 24 64
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Ho: row and column factors are independent
Ha: they are dependent
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I ran a Chi-Sq Test on the 3 by 3 data set and got the following results:
Test statistic: Chi-Sq = 14.7638
p-value = 0.00522
df = (3-1)(3-1) = 4
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Conclusion: Since p-value is less than 1%, reject Ho.
The row and column factors are dependent: their certainty is not
independent of the number of credits they have earned.
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Cheers,
Stan H.
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