Question 1
2.5 pts
In order to test the effectiveness of a new drug in reducing cholesterol level, a random sample of 45 patients who have a higher than normal cholesterol level was chosen, The cholesterol level of each of the patients was measured and recorded before and then after taking the new drug for a period of 6 weeks, and the differences (before - after) were calculated.
In this case, which of the following is the appropriate set of hypotheses?
(H_(0):\mu )=(0) and (H_(0):\mu )<(0)
(H_(0);\mu )=(0) and (H_(a);\mu )>(0)
(H_(0):\mu )=(0) and (H_(0):\mu )!=(0)
None of the above. This is not a matched pairs situation.