# math check

posted by
**Tom56** on
.

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is left-handed. (Give your answers correct to three decimal places.)

(a) Compute the probability that exactly five students are left-handed.

Incorrect: 9.936

(b) Compute the probability that at most four students are left-handed.

Incorrect: .016.

(c) Compute the probability that at least six students are left-handed.

Incorrect: .197

No matter how I work these out it comes up wrong??