1. If a seed is planted, it has an 85% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 3 don't grow?

2. A baseball player has a batting average of 0.37. What is the probability that he has exactly 3 hits in his next 7 at-bats? 3. For families with 5 children, let XX be the number of children with Genetic Condition B. Can the following table be a probability distribution for the random variable XX?

xx	P(x)P(x)
1	0.0278
2	0.2067
3	0.3355
4	0.2255
5	0.2045

• no
• yes

4. In how many ways can 3 students from a class of 18 be chosen for a field trip?

5. In how many ways can 6 books be chosen from a group of nine?