Chapter 5.1, Problem 5.5E

(a)

To determine

To explain of a way to choose a sample of students that is bad because it depends on voluntary response.

Explanation of Solution

For example, posting a poll on the school website depends on the voluntary response of the students.

(b)

To determine

To explain another example of a bad way to choose a sample but this time one that doesn’t voluntary response.

Explanation of Solution

For example, asking the first 50 students who arrive at the parking. This is bad because it is a convenience sample (individuals were chosen in the easiest way).