Evaluating Efficacy Statements for Medication

Very Hard Data Sufficiency Analyzing Information

In a certain study, researchers examined the effects of a new medication on the blood pressure of patients suffering from hypertension. The study involved 200 patients, and the results were classified into three groups based on the medication's effect:

1. Group A: 80 patients showed a significant decrease in blood pressure.

2. Group B: 70 patients showed a moderate decrease in blood pressure.

3. Group C: 50 patients showed no change in blood pressure.

Based on the data, the researchers concluded that the medication was effective for a significant majority of the patients.

To determine the accuracy of their conclusion, the following information is available:

Statement 1: 30% of the patients in Group A experienced a decrease of more than 20 mmHg in their blood pressure.

Statement 2: The average decrease in blood pressure for all patients was 15 mmHg.

Is the conclusion of the researchers supported by the information provided in the statements?

Statement 1 alone is sufficient, but Statement 2 alone is not sufficient.

Statement 2 alone is sufficient, but Statement 1 alone is not sufficient.

Both statements together are sufficient, but neither statement alone is sufficient.

Each statement alone is sufficient to support the researchers' conclusion.

Hint

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