A community swim team has 150 members. Seventy-five of the members are advanced swimmers. Forty-seven of the members are intermediate swimmers. The remainder are novice swimmers. Forty of the advanced swimmers practice four times a week. Thirty of the intermediate swimmers practice four times a week. Ten of the novice swimmers practice four times a week. Suppose one member of the swim team is chosen randomly.
e. Are being a novice swimmer and practicing four times a week independent events? Why or why not?
OpenStax Statistics, 3.3 Two Basic Rules of Probability, exercise 10