In the introduction to this chapter, we mentioned comparing the mean age of buyers of new domestic cars to the mean age of buyers of new imported cars. Suppose that we want to perform a hypothesis test to decide whether the mean age of buyers of new domestic cars is greater than the mean age of buyers of new imported cars.
a. Identify the variable.
b. Identify the two populations.
c. Determine the null and alternative hypotheses.
d. Classify the hypothesis test as two tailed, left tailed, or right tailed.