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Two researchers were interested in whether or not aspirin reduces the risk of a pregnant woman developing hypertension. To study this, Researcher One goes to the hospital and finds 48 women who volunteer to be a part of the study. Of the 32 women who said they took aspirin every day. 8 developed hypertension during pregnancy. Of the 16 women who said they did not take aspirin every day. 7 develop hypertension. Researcher Two randomly selects 48 pregnant women who have doctors at the local hospital. Half report taking aspirin regularly throughout their pregnancy. while the other half report that they have not taken aspirin while pregnant. She records whether or not each woman develops hypertension. Which of the following statements are true? O Both Researchers One & Two have designed an experimental study. O Only Researcher One has designed an experimental study. O Both Researchers One & Two have designed an observational study. O Only Researcher Two has designed an experimental study.

Two researchers were interested in whether or not aspirin reduces the risk of a pregnant woman developing hypertension. To study this, Researcher One goes to the hospital and finds 48 women who volunteer to be a part of the study. Of the 32 women who said they took aspirin every day. 8 developed hypertension during pregnancy. Of the 16 women who said they did not take aspirin every day. 7 develop hypertension. Researcher Two randomly selects 48 pregnant women who have doctors at the local hospital. Half report taking aspirin regularly throughout their pregnancy. while the other half report that they have not taken aspirin while pregnant. She records whether or not each woman develops hypertension. Which of the following statements are true? O Both Researchers One & Two have designed an experimental study. O Only Researcher One has designed an experimental study. O Both Researchers One & Two have designed an observational study. O Only Researcher Two has designed an experimental study.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Two researchers were interested in whether or not aspirin reduces the risk of a pregnant woman developing hypertension. To study this, Researcher One goes to the hospital and finds 48 women who volunteer to be a part of the study. Of the 32 women who said they took aspirin every day, 8 developed hypertension during pregnancy. Of the 16 women who said they did not take aspirin every day, 7 develop hypertension. Researcher Two randomly selects 48 pregnant women who have doctors at the local hospital. Half report taking aspirin regularly throughout their pregnancy: while the other half report that they have not taken aspirin while pregnant. She records whether or not each woman develops hypertension. Which of the following statements are true? O Both Researchers One & Two have designed an experimental study. O Only Researcher One has designed an experimental study. Both Researchers One & Two have designed an observational study. Only Researcher Two has designed an experimental study.
Transcribed Image Text:Two researchers were interested in whether or not aspirin reduces the risk of a pregnant woman developing hypertension. To study this, Researcher One goes to the hospital and finds 48 women who volunteer to be a part of the study. Of the 32 women who said they took aspirin every day, 8 developed hypertension during pregnancy. Of the 16 women who said they did not take aspirin every day, 7 develop hypertension. Researcher Two randomly selects 48 pregnant women who have doctors at the local hospital. Half report taking aspirin regularly throughout their pregnancy: while the other half report that they have not taken aspirin while pregnant. She records whether or not each woman develops hypertension. Which of the following statements are true? O Both Researchers One & Two have designed an experimental study. O Only Researcher One has designed an experimental study. Both Researchers One & Two have designed an observational study. Only Researcher Two has designed an experimental study.
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