1. Consider a binomial random variable when the number of trials is 9 and the probability of success on each trial is 0.43. Find the mean and standard deviation of this random variable.

2. Define "type I error" in your own words.

3. When should the t distribution be used?

4. How do we find the degrees of freedom when using the t distribution to estimate or test the mean of a sample from a single population?

5. If my p-value is 0.035 and my significance level is 0.05, what about the null hypothesis and the alternative hypothesis?