i. The claim that "male and female University of Toledo students prefer different parking lots on campus" is an example of a chi-square null hypothesis. ii. For contingency table analysis using the chi-square test, multiplying the number of rows minus 1 by the number of columns minus 1 will give you the degrees of freedom.
iii. For a contingency table, the expected frequency for a cell is found by dividing the row total by the grand total.
A) (i), (ii), and (iii) are all correct statements.
B) (ii) is a correct statement but not (i) or (iii).
C) (iii) is a correct statement but not (i) or (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

The claim in (i) is actually an alternative hypothesis, not a null hypothesis, because it specifies a difference. The null hypothesis would typically state there is no difference in preferences. In (iii), the expected frequency for a cell is calculated by multiplying the row total and column total and then dividing by the grand total, not simply dividing the row total by the grand total. Statement (ii) is correct as it accurately describes how to calculate degrees of freedom for a contingency table.

I the Claim That "Male and Female University of Toledo