Question

Among Romulans, there is a trait known as Reas Romulus Betta;
Romulans with this trait enjoy watching Romulan Fish produce flourescent skin colors.

Those who don't have Reas Romulus Betta do not watch these fish.

You are performing a study with a large population of subjects.

The proportions of individuals with phenotype-pairs is as follows: 
The proportion of individuals who are   male and        have Reas Romulus Betta is 0.554; 
The proportion of individuals who are female and        have Reas Romulus Betta is 0.0681; 
The proportion of individuals who are   male and do not have Reas Romulus Betta is 0.357; 
The proportion of individuals who are female and do not have Reas Romulus Betta is 0.0209.

Question A. What is the probability a Romulan is female in this population?

Question B. What is the probability a Romulan does not have Reas Romulus Betta
and is female?

Question C. What is the probability a Romulan does not have Reas Romulus Betta
given that she is female?

Answer 1

Question A. What is the probability a Romulan is female in this population?
Probability = Number of female / Total number of individual
= (0.0681 + 0.0209 / (0.554 + 0.0681 + 0.357 + 0.0209) = 0.089

Question B. What is the probability a Romulan does not have Reas Romulus Betta
and is female?

• Probability = Number of Romulan female who does not have Reas Romulus Betta / Total number of individual

• = (0.0209)/ (0.554 + 0.0681 + 0.357 + 0.0209) = 0.0209

Question C. What is the probability a Romulan does not have Reas Romulus Betta
given that she is female?

• P(A) = Probability A Romulan doesnot have Raes Romulus Betta
• P(B) = Probability A Romulan is female
•