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Sixty-four students in an introductory college economics class were asked how many credits they had earned...

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. At α = .01, is the degree of certainty independent of credits earned?

  Credits Earned   Very
  Uncertain		   Somewhat
  Certain		 Very
Certain		 Row Total
  0 – 9 11          10           3            24         
  10 – 59 10          5           9            24         
  60 or more 2          9           11            22         

(a) At α = .01, the hypothesis for the given issue is H0: Credits Earned and Certainty of Major are independent.

Yes
No

(b) Calculate the chi-square test statistic, degrees of freedom, and the p-value. (Round your test statistic value to 2 decimal places and the p-value to 4 decimal places.)

  Test statistic   
  d.f.   
  p-value   

(c) Find the critical value of the chi-square for α = .01. (Round your answer to 2 decimal places.)

Critical value   
Math   Statistics-And-Probability   
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Homework Answers

Answer #1
Column 1 Column 2 Column 3 Total
Row 1 11 10 3 24
Row 2 10 5 9 24
Row 3 2 9 11 22
Total 23 24 23 70

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