1.2.2 Checkup: Practice Problems Checkup Probability and Statistics Name: Date: Answer the following questions using what you've learned from this lesson. Write your responses in the space provided. For questions 1 - 3, read the examples and identify the method of collecting data that was used. 1. A scientist is studying the 2. A scientist is studying the effect of exercise on blood effect of exercise on blood pressure. He studies 50 people pressure. He studies 20 people who exercise regularly to find out who exercise 5 hours per week whether their blood pressures are and 20 people who do not low, average, or high. exercise. He compares the blood pressures of the two groups at This is an example of a(n): the beginning and after three months. Answer choices: sample survey. This is an example of a(n) observational study experiment Answer choices: sample survey. observational study. experiment. 3. A scientist is studying the effect of exercise on blood pressure. He obtains a list of patients being treated for high blood pressure and asks every fifth patient about his or her exercise habits This is an example of a(n); Answer choices sample survey observational study experiment