What is the probability a person’s cholesterol

  • Thread starter mcknia07
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    Probability
Please show what you have tried, and we'll be happy to help!In summary, we have a table showing the number of individuals with cholesterol levels less than or equal to 200 and those who took the drug, as well as the total number of individuals. We then define event A as "cholesterol ≤ 200" and event B as "took the drug". We are asked to find the probability of event A (P(A)), the probability of event B (P(B)), the product of these two probabilities (P(A) * P(B)), and the probability of event A given that event B occurred (P(A|B)). We are also asked if P(A) * P(B) is equal to P(A|B
  • #1
mcknia07
284
8
Took Drug Didn't Total
Cholesterol ≤ 200 60 50 110
Cholesterol > 200 40 50 90
100 100 200


We’ll call event A “cholesterol ≤ 200” and event B “took the drug”…..

What is the probability a person’s cholesterol ≤ 200? P(A)
What is the probability a person took the drug? P(B)
What is the product of these two probabilities (multiply the above together)?
P(A) * P(B)
Given that a person took the cholesterol drug, what is the probability that their cholesterol ≤ 200? P(A|B)
Does P(A) * P(B) = P(A|B)?
Are these events independent?
What does this tell us about the effectiveness of the drug?
 
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  • #2


Good questions! Now, why did you post them here? If you want someone to do the problem for you, that isn't going to happen! And to get any help, you have to show us what you do understand about this problem and what you can do so we'll know what kind of help you need. You can do that by showing us what you have tried on it yourself. Or have you have not even tried to do this problem yourself?
 
  • #3


I posted in the wrong section.
 
  • #4


mcknia07 said:
I posted in the wrong section.
This is the right section. What HallsOfIvy was asking was, what have you tried? If you don't show any effort at solving a problem you post, we won't help (see the Rules - https://www.physicsforums.com/showthread.php?t=414380).
 

1. What is cholesterol?

Cholesterol is a waxy, fat-like substance that is found in all cells of the body. It is important for the production of hormones, vitamin D, and digestive fluids.

2. How is cholesterol measured?

Cholesterol levels are typically measured through a simple blood test called a lipid panel. This test measures the levels of total cholesterol, HDL (good) cholesterol, LDL (bad) cholesterol, and triglycerides.

3. What is the recommended level of cholesterol?

The recommended level of cholesterol varies depending on a person's risk factors for heart disease. Generally, a total cholesterol level below 200 mg/dL is considered desirable, while a level above 240 mg/dL is considered high.

4. What factors can affect a person's cholesterol level?

Several factors can affect a person's cholesterol level, including genetics, diet, weight, physical activity, age, and gender. Certain medical conditions and medications can also impact cholesterol levels.

5. How can a person lower their cholesterol?

A person can lower their cholesterol by making lifestyle changes such as adopting a healthy diet, exercising regularly, maintaining a healthy weight, and quitting smoking. In some cases, medication may also be prescribed by a doctor to help lower cholesterol levels.

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