Question: Please answer the questions from 1 to 3. I would appreciate the help. A pharmaceutical company has developed a new drug intended to help lower

Please answer the questions from 1 to 3. I would appreciate the help.

A pharmaceutical company has developed a new drug intended to help lower cholesterol, and plans to test its effectiveness with test subjects/patients with high cholesterol. The test subjects (150 patients with high cholesterol) were randomly assigned to three groups: 50 to take this new drug (experimental group), 50 to take a cholesterol drug already on the market (control group), and 50 to a placebo pill. The test subjects' cholesterol level will be measured once before and once after the treatment. (Use Andy Field's test identifier if needed.)

What are the independent and dependent variables and their level of measurement?
What statistical test and how many of them will be used to explore the difference in average cholesterol between the groups before the treatment and after the treatment?
What statistical test and how many of them will be used to explore the difference in average cholesterol within each group before and after the treatment (i.e., how much did cholesterol level change within each group as result of the treatment)?

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