1. Lipitor is the trade name of the drug atorvastatin, which is used to reduce cholesterol in patients. This is the largest selling drug in the world, with $13 billion in sales in a recent year. Adverse reactions have been studied in clinical trials, and the table below summarizes results for infections in patients from different treatment groups (based on data from Parke-Davis). Data comes from a simple random sample. Use a 0.05 significance level to test the claim that getting an infection is independent of treatment. The values in each cell below are frequencies.
   1. Determine the expected frequencies. Include the Stata command and output. If you cant figure out the Stata command you can do it by hand.

	Placebo	Atorvastatin 10mg	Atorvastatin 40mg	Atorvastatin 80mg
Infection	27	89	8	7
No infection	243	774	71	87