4. and 7.

el 4. Clinical Study When conducting a clinical study, it is common to maintain the privacy of subjects by assigning them number codes that will be used instead of their actual names. Sev- eral subjects are assigned these codes: 1, 23.516) Spd sy 6208224 26, 32, and 40. Does it make sense to calculate the average (mean) of these numbers? 2. Clinical Study Which of the following best describes the level of measurement of the data listed in Exercise 1: nominal, ordinal, interval, ratio? 3. Waist Data Set 1 \"Body Data\" includes measurements of waist circumferences. Are waist circumferences values that are discrete or continuous? 4. Waist Are the waist circumferences described in Exercise 3 quantitative data or categorical data? 5. Waist Which of the following best describes the level of measurement of the waist circumferences described in Exercise 3: nominal, ordinal, interval, ratio? 6. Waist If you construct a sample by selecting every sixth waist circumference from those listed in Data Set 1 \"Body Data,\" is the result a simple random sample of the listed waist circumferences? 7. Gallup Poll In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Because the subjects agreed to respond, is the sample a voluntary re- sponse sample? 8. Parameter and Statistic In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Among the adults who responded to the survey question, 21% said that they did smoke. Is that value of 21% an example of a'statistic or a parameter