Question let a population consist of the values 7 cigarettes, 8 cigarettes, and 21 cigarettes smoked in a day. show that when samples of size 2 are randomly selected with replacement, the samples have mean absolute deviations that do not center about the value of the mean absolute deviation of the population. what does this indicate about a sample mean absolute deviation being used as an estimator of the mean absolute deviation of a population? the mean of the sample mean absolute deviations is calculate the mean absolute deviation for each possible sample of size 2 from the population. sample mean absolute deviation {7,7}{7,8} {7,21} {8,7} {8,8} {8,21} {21,7} {21,8} {21,21}(type integers or decimals rounded to one decimal place as needed.) (type an integer or decimal rounded to one decimal place as needed.)calculate the population mean absolute deviation. the population mean absolute deviation is (type an integer or decimal rounded to one decimal place as needed.) what do these values indicate about a sample mean absolute deviation being used as an estimator of the mean absolute deviation of a population? a. the sample mean absolute deviation is an unbiased estimator of the population mean absolute deviation because the sample statistic is the same value regardless of which sample is chosen. b. the sample mean absolute deviation is a biased estimator of the population mean absolute deviation because the sample statistic centers around a different value than the population parameter. c. the sample mean absolute deviation is an unbiased estimator of the population mean absolute deviation because the sample statistic centers around the mean value of the population. d. the sample mean absolute deviation is a biased estimator of the population mean absolute deviation because the sample statistic centers around the mean value of the population.