Read the definition of “independent events” given in Rule 3. Explain whether each of the following pairs of events is likely to be independent:
a. A married couple will vote in an upcoming presidential election. Event A is that the husband votes for the Republican candidate; event B is that the wife votes for the Republican candidate.
b. Event A is that a major earthquake will occur somewhere in the world in the next month; event B is that the Dow Jones Industrial Average will be higher in one month than it is now.