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6. Refer to the definitions of a random sample and simple random sample, respectively. Determine if each scenario describes a random sample. If the sample is random, also determine if the sample is a simple random sample. a. A statistics class with 36 students is arranged so that there are 6 rows with 6 students in each row, and the rows are numbered from 1 through 6. A die is rolled, and a sample consists of all students in the row corresponding to the outcome of the die. b. For the same class described in part (a), the 36 student names are written on 36 individual index cards. The cards are shuffled, and six names are drawn from the top. c. For the same class described in part (a), the six youngest students are selected