QUESTION 6 Suppose the 'n' random variables Xl, X-z, Xn represent a random sample of the random variable X. In this case, the sample statistic O O a biased but consistent estimator of the expected value of X. a biased and inconsistent estimator of the expected value of X is an unbiased but inconsistent estimator of the expected value of X. is an unbiased and consistent estimator of the expected value of X