Introduction to binomial distributions.

1. Binomial
Distributions
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2. In some probability experiments, there are exactly two possible
outcomes. For example:
• When flipping a coin, you get heads or tails. When flipping a
coin 200 times, what is the probability of getting heads exactly
101 times? (The answer is 5.58 percent)

3. In some probability experiments, there are exactly two possible
outcomes. For example:
• When flipping a coin, you get heads or tails. When flipping a
coin 200 times, what is the probability of getting heads exactly
101 times? (The answer is 5.58 percent)
• When answering a question on a multiple choice test, your
answer will be right or wrong. What is the probability of getting 50
percent of the answers correct if there are four choices for each
question, and you guess each answer?