Tell in each of the following instances whether the study uses an independent sa
ID: 3221379 • Letter: T
Question
Tell in each of the following instances whether the study uses an independent samples or a matched pairs design. Military test pilots who had at least one accident are matched by length of experience to pilots without accidents. The two groups are then surveyed about the number of childhood accidents to determine if the former group of pilots is accident prone Lung cancer patients admitted in a hospital over a 12 month period are each matched with a noncancer patient by age, sex, and race. To determine whether or not smoking is a risk factor for lung cancer, it is noted for each patient if he or she is a smoker. A survey is conducted of college bound and no college bound high school seniors to compare the proportion who have at least one parent who attended college. An advertising agency has come up with two different TV commercials for a household detergent. To determine which one is more effective, a test conducted in which a sample of 100 adults is randomly divided into two groups. Each group is shown a different commercial, and the people in the group are asked to score the commercial. What are advantages/disadvantages to use matched pairs design? Will be results the same?Explanation / Answer
(a) The group is matched pairs design. Here matched sample of minimum one accident and no accident are compared with each other based on their matching of experiences..
(b) This group is also an matched pairs design. Here matched sample of same age, creed , raceis compared with cancer and no cancer group.
(c) This testing is independent group design. Here random indpendent samples are taken to compare college bound and non college bound group.
(d) This testing is also independent group design where independent samples are divided into two groups to rate commercial.
(e) Advantages:
1. Can compare results for particular class of people or objects.
2. Easy to do sampling
Disadvantages :
1. Long process and tough to gather samples of matching.
2. in large sample size, less effective.
No, Results will not be the same. It can vary as per conditions and depends on the given class of samples.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.