Course
MATH 225N Statistical Reasoning For The Health Sciences
Required Resources
Read/review the following resources for this activity:
- OpenStax Textbook: Chapter 2, 3
- Lesson
- Minimum of 1 scholarly source
In your reference for this assignment, … sure to include both your text/class materials AND your outside reading(s).
Initial Post Instructions
Probability plays a major role in the medical community. Diagnoses are … on probabilities. They are really questions or “what if’s”, and are … by the probability that the treatment will be the best for the ailment.
Let’s look at probability in terms of both the real world and the medical community.
1. Survey 30 people to find out if they are left-handed or right-handed, and use the following chart to create a contingency table with the information.
Left handed Right handed Total Female Male Total
2. Answer the following questions about the information in your contingency table:
-
- If a person is randomly … from the survey participants, what is the probability that the person will … left-handed?
- If you randomly choose a female from the people you … , what is the probability that she is left-handed?
- What is the odds ratio of choosing a left-handed female?
- What is the relative risk of choosing a left-handed female?
SOLUTION
1. Survey 30 people to find out if they are left-handed or right-handed, and use the following chart to create a contingency table with the information.
| left handed | right handed | total | |
| total female | 8 (k) | 10 (l) | 18 (k +l) |
| male total | 4 (m) | 8 (n) | 12 (m + n) |
| sum | 12 ( k+m) | 18 (l + n) | 30 (k + l + m + n) |
- Answer the following questions about the information in your contingency table:
- If a person is randomly selected from the survey participants, what is the probability that the person will be left-handed?……
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