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 a contingency table, the expected frequency for a cell is found by dividing the row total by the grand total.
iii. 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.
A) (i), (ii), and (iii) are all correct statements.
B) (i) and (ii) are false statements only (iii) is correct.
C) (ii) is a correct statement but not (i) or (iii).
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. The null hypothesis would typically state there is no difference in preferences between male and female students. In (ii), the expected frequency is calculated by multiplying the row total and column total and then dividing by the grand total, not just dividing the row total by the grand total. Statement (iii) is correct; the formula for degrees of freedom in a contingency table is indeed (number of rows - 1) * (number of columns - 1).

I the Claim That "Male and Female University of Toledo