Chapter 12, Problem 28E

To determine

To discuss the advantages and disadvantages and also explain do you think these advantages and disadvantages have changed over time and how do you expect they will change in the future.

Answer to Problem 28E

Yes, it will change.

Explanation of Solution

In the question it is given that the researchers want to study what about drawing random sample only from cell phones exchanges. Thus, we can say about this survey is that cell phones are more likely to be used by higher income individuals. This will cause under-coverage bias. As cell phone use becomes more widespread, the effects of this bias will also decrease. So, we can say that these advantages and disadvantages will change over time as in the future the scenario will be changed.