Consider the chi-square statistic.
a. Can the value of this statistic be negative? Why or why not?
b. When will the chi-square statistic be 0?
c. Which of (A)–(C) describes the shape of the distribution of the chi-square statistic:
A. Symmetric
B. Skewed toward high values (long right tail)
C. Skewed toward low values (long left tail)

d. Give an intuitive explanation of why you expect the shape of distribution of the chi-square statistic to be what you described in part (c).