Jan 23, 2024
1) Roll two dice. Find P(sum is 9).
2) Roll two dice. Find P(sum is 6 or less).
3) Roll ten dice. Find P(average is more than 4).
4) Flip 20 coins. Find P(exactly 10 are heads).
5) A 75% free throw shooter takes 100 shots. Find P(makes 80 or more).
6) Choose four North American rivers at random (from
rivers). Find P(their average length is more than 1000
miles).
7) Approximately 10% of people are left handed. What is the probability that a class of 30 people has two or more leftys?