1. Math
  2. Mathematics
  3. can someone please show me the workings for the following...

Question: can someone please show me the workings for the following...

Question details

Can someone please show me the workings for the following question:

 

Mandatory drug testing

In July 2011, the state of Florida started testing all welfare recipients for the use of illegal drugs. Statistics suggest that some 8% of adult Floridians use illegal drugs; let us assume that this is true for welfare recipients as well. Imagine that the drug test is 90% accurate, meaning that it gives the correct response in nine cases out of 10.
c) What is the probability that a randomly selected Floridian welfare recipient has a positive test.

The answer is 0.164 but I'd like to see the workings to understand how to get the answer

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution