Answer:
Probability of fifth person = p (5/10)
= p (1/2)
Explanation has given below.
Step-by-step explanation:
The population has the type of blood investigated = 10%
The immunologist needs five people to complete her study.
Probability of finding a 5th person when she starts tests her 10th volunteer?
Probability = p ( 10C5)
= 252%
=2.52
When she tested her 10th volunteer,
There is a 2% probability that she will find a fifth person for her study.
Another way to find out the probability of the fifth person,
When she started her 10th volunteer.
Probability of fifth person = p (5/10)
= p (1/2)
