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1. Complete the following table:

Definition	Sample	Population	Sampling Distribution of means
	S2

2. Which of the above are parameters and which are statistics?

3. Which of the above in #1 are BIASED measures? Explain.

4. What does N-1 represent? When is it used?

6. Your car is making a funny noise right before you are planning to leave for an 8-hour road trip. Should you take it to the shop?

State H0:

State H1:

What would be a Type I error for this example and its implications:

What would be a Type II error for this example and its implications:

7. Explain what a sampling distribution of means is. (1 point)

8. A worker in a steel factory wants to estimate the national average salary for steelworkers. He asked a random sample of fellow steelworkers what their salaries were. Their salaries (expressed in thousands) are shown below. Calculate a 95% confidence interval for the data set. Show all formulas and calculations.

34 36 28 25 37 29 32