Sixty-four students in an introductory college economics class were asked how ma

Question

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

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 3 decimal places.)

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

Explanation / Answer

The statistical software output for this problem is:

Contingency table results:
Rows: Credits Earned
Columns: None

Chi-Square test:

b) Test statistic = 16.33

D.f. = 4

P - value = 0.003

c) Critical value = 13.28

Very Uncertain Somewhat Certain Very Certain Total 0 – 9 12 9 3 24 10 – 59 8 3 9 20 60 or more 1 7 12 20 Total 21 19 24 64

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