Suppose you have a data set about whether a person received a new drug or a sugar pill and the number of hours of deep sleep. a. Which of the sources of data best describe the data set? b. Is the data set based on a sample or a population? a. Choose the correct answer below. O A. These data are results of an observational study. O B. These data are collected by ongoing business activities. OC. These data are outcomes of a designed experiment. Thono doto oro roonn

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