What is the probability that a person chosen at random will have split drugs?

iostatistics
Fernando et al. (2003) studied drug-sharing among injection drugs users in the South Bronx in New York City. Splitting a bag a practice where heroin is shared between two people after dissolving it in a common cooker prior to injection is a known high risk factor for HIV exposure. Interviews with drug users in a residential treatment facility provided the following information.

Gender
Have you split drugs?
Total
Yes (Y)
No (N)
Male (M)
390
321
711
Female (F)
179
131
310
Total
569
452
1021

What is the probability that a person chosen at random will have split drugs?
What is the probability that a person chosen at random is not female?
What is the probablity that a person has split drugs given they are a male?
WHat is the probablility that someone chosen at random will be a female or will not have split drugs?
Given taht someone has split drugs what is the probablity that they are female?

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