Study Guide Unit III

Test III covers modules:

Probability Distributions
The Standard Normal Distribution

1. Given a discrete pd, calculate expected value and graph the distribution:
2. Given a discrete pd, calculate probabilities and expected values.
3. Calculate the expected value of a monetary game.
4. Binomial probability problem: Calculate probabilities and expected value or mean
5. Binomial probability problem: Calculate probabilities and expected value or mean
6. Identify a random variable as either discrete or continuous.
7. Discuss the empirical rule for a normal distribution.
8.From a normal distribution, find percent of scores between plus or minus one standard deviation from mean, between plus or minus two standard deviations from the mean etc.
9. From a normal distribution, find probabilities for selected scores.
10. In dealing with continuous probability distributions, explain why we speak of probabilities over intervals and not probabilities at points.
11. Name four ways in which normal curves are similar.
12. What do we mean when we say normal curves are a two parameter family of curves?
13. Draw a density function and explain how to interpret it.
14. Draw a graph of two normal distributions with the same mean but different standard deviations. Draw two normal distributions with the same standard deviation but different means
15. name the two types of probability distributions.
16. How are probability distributions obtained?