we will be trying out a few different approaches to random sampling

Assignment

Lets find a response to each of the problems listed in the textbook for the Gastroenterologycase (problems 6.1 - 6.4).

Gastroenterology

Suppose we are asked to construct a list of treatment assignments for patients entering a study comparing different treatments for duodenal ulcer.

• 6.1 Anticipating that 20 patients will be entered in the study and two treatments will be used, construct a list of random-treatment assignments starting in the 28th row of the random-number table (Table 4 in the Appendix).
• 6.2 Count the number of people assigned to each treatment group. How does this number compare with the expected number in each group?
• 6.3 Suppose we change our minds and decide to enroll

40 patients and use four treatment groups. Use a computer program (such as MINITAB or Excel) to construct the list of random-treatment assignments referred to in Problem 6.1.

6.4 Answer Problem 6.2 for the list of treatment assignments derived in Problem 6.3.