Question 198601: 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 � = .01, is the degree of certainty independent of credits earned? Certainty
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
Applied Statistics in Business and Economics (2007) by David P. Doane and Lori E. Seward
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 � = .01, is the degree of certainty independent of credits earned? Certainty
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: degree of certainty is independent of credits earned
H1: they are dependent
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Run a Chi-Sq test on the 3 by 4 set of data to get:
test statistic: Chi-Sq = 14.76
p-value = 0.0222
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Decision: Since the p-value is greater than 1%, Fail to reject Ho.
The row and column factors are independent.
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Cheers,
Stan H.
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