Batches that consist of 50 coil springs from a production process are checked for conformance to customer

Question:

Batches that consist of 50 coil springs from a production process are checked for conformance to customer requirements. The mean number of nonconforming coil springs in a batch is 5. Assume that the number of nonconforming springs in a batch, denoted as X, is a binomial random variable.
(a) What are n and p?
(b) What is P(X < 2?
(c) What is P(X > 49?