# Stat.

posted by
**Nickie**
.

A trick coin has been weighted so that heads occurs

with a probability of p 2

3, and p(tails) 1

3. If you

toss this coin 72 times,

a. How many heads would you expect to get on

average?

b. What is the probability of getting more than 50

heads?

c. What is the probability of getting exactly 50 heads?