A researcher is conducting a study on Parkinson's disease. For the 100 patients he interviews, he records their gender, annual income, occupation and weight. He finds that 50% of the interviewed subjects who have Parkinson's disease work in the service industry, and concluded that working in the service industry causes one's chance of getting Parkinson's disease to increase. Which of the following statements is/are correct about the researcher's claim? A. The researcher cannot make such a claim since this is an observational study. B. The researcher cannot make such a claim since 50% is too small. C. Both (A) and (B). D. Neither (A) nor (B).
A researcher is conducting a study on Parkinson's disease. For the 100 patients he interviews, he records their gender, annual income, occupation and weight. He finds that 50% of the interviewed subjects who have Parkinson's disease work in the service industry, and concluded that working in the service industry causes one's chance of getting Parkinson's disease to increase. Which of the following statements is/are correct about the researcher's claim? A. The researcher cannot make such a claim since this is an observational study. B. The researcher cannot make such a claim since 50% is too small. C. Both (A) and (B). D. Neither (A) nor (B).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A researcher is conducting a study on Parkinson's disease. For the 100 patients he interviews, he records their gender, annual income, occupation and weight. He finds that 50% of the interviewed subjects who have Parkinson's disease work in the service industry, and concluded that working in the service industry causes one's chance of getting Parkinson's disease to increase. Which of the following statements is/are correct about the researcher's claim?
A. The researcher cannot make such a claim since this is an observational study.
B. The researcher cannot make such a claim since 50% is too small.
C. Both (A) and (B).
D. Neither (A) nor (B).
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