Respuesta :
Answer:
5/9
Step-by-step explanation:
The given is students that failed the test. 5 students completed the homework and failed the test and there is a total of 9 students who failed the test. So, the answer would be 5/9
Using it's concept, it is found that there is a 0.5556 = 55.56% probability that a student completed the homework given that they failed the test.
What is a probability?
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, there are 21 - 12 = 9 students who failed the test, and of those, 9 - 4 = 5 completed the homework, hence the probability is given by:
p = 5/9 = 0.5556.
0.5556 = 55.56% probability that a student completed the homework given that they failed the test.
More can be learned about probabilities at https://brainly.com/question/14398287
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