A group of scientists wants to determine the efficacy of a vaccine. To do so they recruited 1000 subjects. Two months ago 300 random subjects received the vaccine T = 1. The other 700 received a placebo T = 0. The scientist also measured if the subjects became infected with the virus Y = 1 or not Y = 0 in the last 2 months. They plan to test the efficacy of the vaccine by running the following regression: Y = Bo+BiT tu Which of the following statements is FALSE: Select one: O a. This model will generate biased estimates because it does not control for many omitted variables O b. The fact that more people receive the placebo than the vaccine will not generate bias O c. Scientists do not need to observe the initial health status of the subjects to get unbiased estimates because the assignment of the vaccine was random O d. A negative B₁ would indicate that the vaccine is effective
A group of scientists wants to determine the efficacy of a vaccine. To do so they recruited 1000 subjects. Two months ago 300 random subjects received the vaccine T = 1. The other 700 received a placebo T = 0. The scientist also measured if the subjects became infected with the virus Y = 1 or not Y = 0 in the last 2 months. They plan to test the efficacy of the vaccine by running the following regression: Y = Bo+BiT tu Which of the following statements is FALSE: Select one: O a. This model will generate biased estimates because it does not control for many omitted variables O b. The fact that more people receive the placebo than the vaccine will not generate bias O c. Scientists do not need to observe the initial health status of the subjects to get unbiased estimates because the assignment of the vaccine was random O d. A negative B₁ would indicate that the vaccine is effective
Chapter4: Linear Functions
Section: Chapter Questions
Problem 30PT: For the following exercises, use Table 4 which shows the percent of unemployed persons 25 years or...
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Recommended textbooks for you
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt