oes regular exercise reduce bone loss in postmenopausal women? Here are two ways to study this question. Which design will roduce more trustworthy data? 1. A researcher finds 1000 postmenopausal women who exercise regularly. She matches each with a similar postmenopausal woman who does not exercise regularly, and she follows both groups for five years. 2. Another researcher finds 2000 postmenopausal women who are willing to participate in a study. She assigns 1000 of the women to a regular program of supervised exercise. The other 1000 continue their usual habits. The researcher follows both groups for five years. Select all statements that are true. 1 is an observational study and 2 is an experiment. The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is likely to be larger in 2 and less in 1 due to randomization. O The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is likely to be larger in 1 and less in 2 due to randomization. O A placebo would be impractical in both 1 and 2. O 1 and 2 are both experiments. O 1 and 2 are both observational studies.
oes regular exercise reduce bone loss in postmenopausal women? Here are two ways to study this question. Which design will roduce more trustworthy data? 1. A researcher finds 1000 postmenopausal women who exercise regularly. She matches each with a similar postmenopausal woman who does not exercise regularly, and she follows both groups for five years. 2. Another researcher finds 2000 postmenopausal women who are willing to participate in a study. She assigns 1000 of the women to a regular program of supervised exercise. The other 1000 continue their usual habits. The researcher follows both groups for five years. Select all statements that are true. 1 is an observational study and 2 is an experiment. The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is likely to be larger in 2 and less in 1 due to randomization. O The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is likely to be larger in 1 and less in 2 due to randomization. O A placebo would be impractical in both 1 and 2. O 1 and 2 are both experiments. O 1 and 2 are both observational studies.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
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Related questions
Question
![Does regular exercise reduce bone loss in postmenopausal women? Here are two ways to study this question. Which design will
produce more trustworthy data?
1. A researcher finds 1000 postmenopausal women who exercise regularly. She matches each with a similar postmenopausal
woman who does not exercise regularly, and she follows both groups for five years.
2. Another researcher finds 2000 postmenopausal women who are willing to participate in a study. She assigns 1000 of the
women to a regular program of supervised exercise. The other 1000 continue their usual habits. The researcher follows
both groups for five years.
Select all statements that are true.
1 is an observational study and 2 is an experiment.
The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is
likely to be larger in 2 and less in 1 due to randomization.
The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is
likely to be larger in 1 and less in 2 due to randomization.
A placebo would be impractical in both 1 and 2.
1 and 2 are both experiments.
1 and 2 are both observational studies.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3f08d3cb-03f2-44ac-afec-90ed33ecc605%2F61b93559-a12c-48fe-936e-5dc91eb88753%2Fbp35cpt_processed.png&w=3840&q=75)
Transcribed Image Text:Does regular exercise reduce bone loss in postmenopausal women? Here are two ways to study this question. Which design will
produce more trustworthy data?
1. A researcher finds 1000 postmenopausal women who exercise regularly. She matches each with a similar postmenopausal
woman who does not exercise regularly, and she follows both groups for five years.
2. Another researcher finds 2000 postmenopausal women who are willing to participate in a study. She assigns 1000 of the
women to a regular program of supervised exercise. The other 1000 continue their usual habits. The researcher follows
both groups for five years.
Select all statements that are true.
1 is an observational study and 2 is an experiment.
The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is
likely to be larger in 2 and less in 1 due to randomization.
The effect of a lurking variable, such as a condition that might affect someone's desire to exercise and their bone loss, is
likely to be larger in 1 and less in 2 due to randomization.
A placebo would be impractical in both 1 and 2.
1 and 2 are both experiments.
1 and 2 are both observational studies.
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