Below is the probability distribution for the number of times students had to take the same exam before passing it.If a student must pass the exam in two tries of less to pass the class,then what is the probability of passing the class?
A).80
B).40
C).20
D).10

Question

Below is the probability distribution for the number of times students had to take the same exam before passing it.If a student must pass the exam in two tries of less to pass the class,then what is the probability of passing the class? 
A).80 
B).40 
C).20 
D).10

Quizplus · Accepted Answer

The probability distribution shows that there is a .8 probability of passing the exam in two tries or less. Since a student must pass in two tries or less to pass the class, the probability of passing the class is .8 or 80%. Therefore, the best choice is A).

Below Is the Probability Distribution for the Number of Times