What is the probability of giving birth to LBW baby? What is the probability of a mother not being a smoker? What is the probability of a mother being a non-smoker and having a LBW baby? Given that a mother is a smoker, what is the probability that they give birth to a LBW baby?
A researcher is collecting data on maternal smoking and giving birth to a low birth weight (LBW) baby (defined by birth weight <2500g). The participant data is summarized in the table. Calculate the probabilities for the questions below. (Note: think of the frequentist definition and use the findings directly from the table to calculate the probabilities)
What is the
What is the probability of a mother not being a smoker?
What is the probability of a mother being a non-smoker and having a LBW baby?
Given that a mother is a smoker, what is the probability that they give birth to a LBW baby?
Table 1. Participant Characteristics
|
LBW |
Non-LBW |
Total |
Maternal Smoker |
28 |
70 |
98 |
Maternal Non-smoker |
11 |
491 |
502 |
Total |
39 |
561 |
600 |
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