Answer:
1) 50.13% probability that none of the students are foreign-born (x=0)
2) 49.87% probability that at least one is foreign-born.
Explanation:
For each student sampled, there are only two possible outcomes. Either they are foreign-born, or they are not. This means that we use the binomial probability distribution to solve this problem.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinatios of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
In this problem we have that:

1 Find the probability that none of the students are foreign-born (x=0)


There is a 50.13% probability that none of the students are foreign-born (x=0)
2 find p(x>=1) (that at least one is foreign-born)
Either no students are foreign-born, or at least one is. The sum of the probabilities of these events is decimal 1.


There is a 49.87% probability that at least one is foreign-born.