1 point A drug company approaches me with a proposal to test if a pill will help keep students awake in class. We select two groups of students at random and give them the pills at the beginning of class while someone observes whether they nod off. Here are the data: Placebo Pill Stayed Awake 11 10 Fell asleep 18 9 How many degrees of freedom are there for the Chi squared test? C 4 1 3 46 2 2