This question is related to sampling distribution. Part 1 of 3 The Sampling Distribution of Sample Means, in combination with the Central Limit Theorem, allows the use of the normal distribution to find/calculate probabilities about a sample mean. What z formula is required for this? z = (X? - ?) / (?/?n) Key: Answers may vary. Part 2 of 3 The Sampling Distribution of Sample Means, in combination with the Central Limit Theorem, allows the use of the normal distribution to find/calculate probabilities about a sample mean. What z formula is required for this? (a) z = x x s (b) z = x (c) z = x / n (d) z = x /n