Question 4.101

4.101 Discrete or continuous?

In each of the following situations, decide whether the random variable is discrete or continuous, and give a reason for your answer.

  1. Your web page has five different links, and a user can click on one of the links or can leave the page. You record the length of time that a user spends on the web page before clicking one of the links or leaving the page.
  2. The number of hits on your web page.
  3. The yearly income of a visitor to your web page.

4.101

(a) Time is continuous. (b) Hits are discrete (you can count them). (c) Yearly income is discrete (you can count money).