Monday
March 30, 2015

Homework Help: Statistics

Posted by Jay on Thursday, December 1, 2011 at 2:47pm.

In the July issue of Archives of Neurology, researchers reported studying the smoking habits of 12000 people (3000 with Parkinson's disease and 9000 healthy people). They found that those who had smoked the most (the equivalent of a pack a day for 60 years) had the lowest risk of getting Parkinson's disease.Was this anecdotal evidence, an observational study or an experiment?

(Im leaning towards observational study but I don't know)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Statistics - 1. In a study of heart disease in male federal employees, ...
Statistics - A recent study was designed to compare smoking habits of young ...
statistics - First graders who misbehave in school may be more likely to be ...
statistics - First graders who misbehave in school may be more likely to be ...
Epidemiology - How do you calculate the disease frequency rate in these problems...
Math - An observational study is described. Determine the nature and scope of ...
statistics - Suppose that in a large population the proportion of people that ...
health-smoking - What is the purpose of nicotine replacement therapy? A. To ...
english - i am looking for the main topic in this paragraph would it be In ...
statistics - First graders who misbehave in school may be more likely to be ...

Members