As a general surgeon on a hospital staff, your observations have led you to think that certain kinds of pain may be alleviated by offering just some kind of drug, whether that drug is potent or not. To test this, three drugs that differ in pain-killing strength, and a placebo, are randomly administered to patients that have just undergone minor surgery to remove a kidney stone. You have recorded the time (in hours) until the patient first complains of pain following receiving the drug or placebo.

Time Until 1st Complaint of Pain (hrs)
Placebo	Drug A	Drug B	Drug C
2.2	2.8	1.1	4.2
0.3	1.4	4.2	3.8
1.1	1.7	3.8	3.6
2.0	4.3	2.6	5.1
3.4	4.3	0.5	2.9
2.8	2.5	1.4	5.6
1.7	3.1	3.6	6.2

A) What are appropriate null and alternative hypotheses for this experiment?

B) Conduct an ANOVA on these data. Be sure to interpret the results you obtain and include data from from excel.