All random samples of size n 9 are selected from a normal population with u 55 and o 10 and the mean is computed for each sample Then all the possible samples of size n 36 are selected from the same population and the mean is computed for each sample Which statement below is true The distribution of sample means for samples of n 9 is less variable than the distribution of sample means for n 36 The distribution of sample means for n 9 has a smaller mean than the distribution of sample means for n 36 The distribution of sample means for n 36 has a smaller mean than the distribution of sample means for n 9 The distribution of sample means for samples of n 36 is less variable than the distribution of sample means for n 9