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GRE
GRE Quantitative Reasoning Section

Comparing Blood Pressure Probabilities

Hard Data Analysis Interpretation Of Data

A research study analyzes the effects of a new medication on blood pressure. The study includes two groups of participants: Group 1 consists of 50 adults who received the medication, while Group 2 consists of 50 adults who received a placebo. After 12 weeks, blood pressure readings (in mmHg) were collected from both groups. The average systolic blood pressure for Group 1 is noted to be 120 mmHg with a standard deviation of 10 mmHg, whereas for Group 2, the average systolic blood pressure is 130 mmHg with a standard deviation of 12 mmHg.

Using this information, determine the relationship between Quantity A and Quantity B:

Quantity A: The probability that a randomly chosen individual from Group 1 has a systolic blood pressure greater than 125 mmHg.

Quantity B: The probability that a randomly chosen individual from Group 2 has a systolic blood pressure greater than 125 mmHg.

Hint

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