Sixtyfour students in an introductory college economics clas

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 = 0.01, is the degree of certainty independent of credits earned?

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

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.)

Solution

Hello!

A)

Yes. That is the right way to raise a null hypothesis to test independence between variables.

B)

Test statistic=7.4073

d.f.=4

p-value = 0.115867

C)

With 4 degrees of freedom and = 0.01, Table obtain: 13.277

D)

Yes !, the variables are independent. We do not reject the null hypothesis. The result is not significant at p < .01.