Probability of Emphysema in a Population - Calculation and Analysis

  • Context: Undergrad 
  • Thread starter Thread starter sinni8
  • Start date Start date
Click For Summary
SUMMARY

The discussion focuses on calculating the probability of emphysema in a population based on smoking status. The calculations provided indicate that the overall probability of a randomly selected individual having emphysema is 0.34% (17/5000). Additionally, the probability of a smoker having emphysema is 0.9% (9/1000), while the probability for non-smokers is 0.2% (2/1000). These results are confirmed as accurate based on the provided data.

PREREQUISITES
  • Understanding of basic probability concepts
  • Familiarity with conditional probability
  • Knowledge of population statistics
  • Ability to perform calculations involving percentages
NEXT STEPS
  • Study the Law of Total Probability for more complex scenarios
  • Learn about Bayes' Theorem for conditional probabilities
  • Explore population health statistics and their implications
  • Review statistical software tools like R or Python for data analysis
USEFUL FOR

Statisticians, public health researchers, and anyone involved in epidemiological studies will benefit from this discussion.

sinni8
Messages
3
Reaction score
0
check the answers please~

Ive done the following questions but not sure about my answers because i have different answers with my friend.. so please tell me whether its correct or wrong.. thank you!:smile: Question 2. In a region, 20% of the adult population are smokers,
0:9% are smokers with emphysema, and 0:2% are non-smokers with emphysema.
(a) What is the probability that a person, selected at random, has emphysema?
0.9% * 20% + 0.2% * 80% = 9/1000 * 1/5 + 2/1000 * 4/5 = 17/5000
(b) Given that the selected person is a smoker, what is the probability that this
person has emphysema?
0.9% = 9/1000
(c) Given that the selected person is not a smoker, what is the probability that
this person has emphysema?
0.2% = 2/1000 = 1/500
 
Physics news on Phys.org


Looks right to me.
 

Similar threads

High School Relative And Absolute Probability (Probability Of Picking A Red Ball)
  • · Replies 8 ·
Replies
8
Views
3K
MHB What is the Probability of Certain Digits Not Appearing in a Random Selection?
  • · Replies 1 ·
Replies
1
Views
2K
High School Death Rally: an intricate probability problem?
  • · Replies 8 ·
Replies
8
Views
3K
High School Poisson Distribution - Selecting cookies that are indistinguishable
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Solving Probability Questions: Bayes' Formula & Variables
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Adding random numbers: Tolerance analysis
  • · Replies 11 ·
Replies
11
Views
4K
MHB Probability that we get totally at most 30 times "head"
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Calculation of average damage using analytical methods
  • · Replies 3 ·
Replies
3
Views
2K
MHB IHave no idea how to solve any os these.
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Problem in Geometric Probability
  • · Replies 7 ·
Replies
7
Views
3K