Answer:
Sample relative risk is 10.
Step-by-step explanation:
We are given the following in the question:
Group 1 of coal miners: 30 out of 150 get lung cancer.
[tex]\text{P(Lung cancer for coal miner)} = \dfrac{30}{150} = \dfrac{1}{5}[/tex]
Group 2 of non-coal miners: 5 out of 250 get lung cancer
[tex]\text{P(Lung cancer for non-coal miner)} = \dfrac{5}{250} = \dfrac{1}{50}[/tex]
Sample relative risk:
Sample relative risk =
[tex]\dfrac{\text{P(lung cancer for coal miner)}}{\text{P(lung cancer for non coal miner)}}\\\\=\dfrac{\frac{1}{5}}{\frac{1}{50}} = \dfrac{50}{5} = 10[/tex]
Thus, sample relative risk is 10.
The sample relative risk in this study researching the probability of increased lung cancer risk because of working in a coal mine is 10 times.
The sample relative risk is a comparison of the probability of facing risks between two outcomes. For example, in this study, the relative risk for a coal miner getting lung cancer is 10 times when compared with a non-coal miner's.
Risk of having lung cancer from group 1 = 20% (30/150)
Risk of having lung cancer from group 2 = 2% (5/250)
Sample relative risk = Risk of Group 1 /Risk of Group 2
= 10 x (20%/2%)
Thus, the sample relative risk in this study researching the probability of increased lung cancer risk as a coal miner is 10 times when compared with the same risk faced by a non-coal miner.
Learn more about sample relative risk at https://brainly.com/question/19562006
