Put simply: there's three categories of problems that you need to be ready to face on your exam. Within each of those three categories, you need to be ready to apply different techniques to solve.

Each of the questions below cover all three categories & techniques! Click any of the questions below to get started!

### Category #1: Probability (p-value) of event occurring

**Question #1** - Using z-score with population distribution**Question #2** - Using z-score with sampling distribution**Question #3** - Using t-score

### Category #2: Confidence intervals

**Question #4** - One-proportion z-test**Question #5** - One-mean z-test**Question #6** - Two-mean t-test

### Category #3: Hypothesis tests

**Question #7** - One-proportion z-test**Question #8** - One-mean z-test**Question #9** - Two-mean t-test**Question #10** - Chi Square – Goodness of Fit**Question #11** - Chi Square – Independence

## Questions

**Question #1**: What percentage of the population has an IQ score less than 105?*Finding p-value of z-score with population distribution*

**Question #2:** What's the probability of finding a sample of 30 people will a mean IQ score of less than 105?*Finding p-value of z-score with sampling distribution*