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A major pharmaceutical company has begun testing the effectiveness of a new drug that has the promise of reducing memory loss in older adults. 5.000 elderly persons with early stage memory loss were recruited for a randomized. double-blinded clinical trial Half of the participants received the new drug, whereas the other half received just a placebo {sugar water}. Subjects were enrolled in doctors' ofces where the doctors administered the drug-or-placebo doses to the patients. The researchers intentionally excluded participants who indicated they had other types of illnesses as well, such as diabetes or hypertensionI as they did not want the presence of the other illnesses to confound the experimental results. As a result of the randomized assignment of subjects, researchers found that the average age of the participants receiving the drug was 82. and the average age of the participants receiving the placebo was 83.51 Thus, the two treatment groups were basically similar with respect to age. which of the following statements is false? 0 The presence of random assignment means that the subjects were randomly sampled from a population of persons with early memory loss. 0 Excluding subjects with other types of illnesses was an example of utilizing direct control. 0 The descripon of the experiment indicates that neither subjects nor doctors knew for certain who received the experimental drug and who received the placebo. 0 Due to randomized assignment, we would also expect the two treatment groups to be somewhat similar with regard to both height and weight