36.At a local college, data were collected on class rank and whether the student had body art.

	Body Art
Class Rank	Body Art	No Body Art	Total
Freshman	40	50	90
Sophomore	34	46	80
Junior	45	65	110
Senior	42	68	110
Total	161	229	390

The chi-square statistic for this table has how many degrees of freedom?

	a.	2
	b.	3
	c.	4
	d.	5
	e.	8