Chapter 1: Q 1.33. (page 15)
The inferential procedures discussed in this book are intended for use with only one particular sampling procedure. What sampling procedure is that?
Simple random sampling procedure.
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Vasectomies and Prostate Cancer. Refer to the vasectomy/ prostate cancer study discussed in Example 1.5 on page 6.
(a). How could the study be modified to make it a designed experiment?
(b). Comment on the feasibility of the designed experiment that you described in part (a).
Oklahoma State Officials. The five top Oklahoma state officials are displayed in Table 1.2 on page 11. Use that table to solve the following problems.
(a) List the possible samples of size 1 that can be obtained from the population of five officials.
(b) What is the difference between obtaining a simple random sample of size 1 and selecting one official at random?
(c) List the possible samples (without replacement) of size 5 that can be obtained from the population of five officials.
(d) What is the difference between obtaining a simple random sample of size 5 and taking a census of the five officials?
In Exercises 1.17-1.22, state whether the investigation in question is an observational study or a designed experiment. Justify your answer in each case.
Aspirin and Cardiovascular Disease. In the article by P. Ridker et al. titled "A Randomized of Low-dose Aspirin in the Primary Prevention of Cardiovascular Disease in Women" (New England Journal of Medicine, Vol. 352, pp. 1293–1304), the researchers noted that "We randomly assigned 39,876 initially healthy women 45 years of age or older to receive 100 mg of aspirin or placebo on alternate days and then monitored them for 10 years for a first major cardiovascular event (i.e., nonfatal myocardial infarction, non-fatal stroke, death from cardiovascular causes)."
In a designed experiment, there is one factor with five levels. How many treatments are there?
Ideally, in cluster sampling, each cluster should the entire population.
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