Nine patients to whom a certain drug was administered, registered the following rise in the blood pressure 3,7,4,-1,-3,6,-4,1,5. Test the hypothesis that the drug does not change the blood pressure, at 10% level of significance [ Assume that the sample is from a normal population]
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Exercise, a common physiological stress, can elicit cardiovascular abnormalities that are not present at rest, and it can be used to determine the adequacy of cardiac function. Because exercise is only one of many stresses to which humans can be exposed, it is more appropriate to call an exercise test exactly that and not a “stress test.” This is particularly relevant considering the increased use of nonexercise stress tests.
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