Which of the following statements is not true? a) O The sampling distribution of the sample mean is always reasonably like the distribution of X, the distribution from which the sample is taken. b) O The standard deviation of the sampling distribution of sample mean = o/Vn c) O The sampling distribution of sample mean is approximately normal, mound-shaped, and symmetric for n > 30 or n = 30. d) O The mean of the sampling distribution of sample mean is always the same as that of X, the distribution from which the sample is taken. e) O The larger the sample size, the better will be the normal approximation to the sampling distribution of sample mean