For Exercises 4.14 and 4.15, see pages 180–181; for 4.16 to 4.20, see pages 183–184; for 4.21 to 4.23, see pages 185–186; for 4.24, see page 187; for 4.25 and 4.26, see page 189; and for 4.27 to 4.29, see page 190.

Question 4.14

4.14 Describing sample spaces.

In each of the following situations, describe a sample space for the random phenomenon. In some cases, you have some freedom in your choice of .

  1. A new business is started. After two years, it is either still in business or it has closed.
  2. A student enrolls in a business statistics course and, at the end of the semester, receives a letter grade.

    181

  3. A food safety inspector tests four randomly chosen henhouse areas for the presence of Salmonella or not. You record the sequence of results.
  4. A food safety inspector tests four randomly chosen henhouse areas for the presence of Salmonella or not. You record the number of areas that show contamination.