A university found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 students registered for the course. (a) Compute the probability that 2 or fewer will withdraw

So, the probability is P=0.2063.

Step-by-step explanation:

We know that a university found that 20% of its students withdraw without completing the introductory statistics course.  

We conclude that p=0.2 and q=1-0.2=0.8.

Assume that 20 students registered for the course.

So, n=20.  

We calculate the probability that 2 or fewer will withdraw.

We know that

We use the formula

we get:

Therefore, we get

So, the probability is P=0.2063.