Consider a random variable X that is normally distributed. Complete parts (a) through (d) below. (This is a reading assessment question Be certain of your answer because you only get one attempt on this question.) (a)If a random variable X is normally distributed, what will be the shape of the distribution of the sample mean? a. Normal b. Skewed left c. Skewed right d. Cannot be determined (b) If the mean of a random variable X is 30, what will be the mean of the sampling distribution of the sample mean? (c) As the sample size n increases, what happens to the standard error of the mean? A. The standard error of the mean remains the same. B. The standard error of the mean increases C. The standard error of the mean decreases