Suppose the ages of students in Statistics 101 follow a right-skewed distribution with a mean of 23 years and a standard deviation of 3 years. If we randomly sampled 100 students, which of the following statements about the sampling distribution of the sample mean age is incorrect? A: The mean of the sampling distribution is equal to 23 years. B: The standard deviation of the sampling distribution is equal to 3 years. C: The shape of the sampling distribution is approximately normal. D: The standard error of the sampling distribution is equal to 0.3 years.