Binomial distribution

What you'll learn

1. 1

   Imagine flipping a coin 4 times. Each flip has two outcomes: heads (H) or tails (T).

2. 2

   Flip the coin 4 times and count the heads.

3. 3

   Let's find the probability of exactly 2 heads in 4 flips of a fair coin.

4. 4

   How many outcomes give exactly 3 heads in 4 flips?

5. 5

   Use the binomial formula to find P(X=1) for n=5, p=0.3.

6. 6

   For n=5, p=0.3, what is P(X=1)?

7. 7

   A factory produces 10% defective items. You check 8 items. What's the probability exactly 1 is defective?