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 α = .10, is the degree of certainty independent of credits earned?

Credits Earned		Very Uncertain				Somewhat Certain				Very Certain				Row Total
0 – 9			12				6				5				23
10 – 59			9				5				7				21
60 or more			4				9				12				25
Col Total			25				20				24				69

(a) At α = .10, 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 = .10. (Round your answer to 2 decimal places.)

Critical value =   

(d) We can reject the null and conclude dependence.

• Yes

• No

Answer 1