Which of the following statements is NOT correct about standard normal distribution (normal distribution of z-scores)? a. An extreme value (e.g., Z = +3.0) is associated with a smaller proportion in the distribution O b. Mean, median and mode will have the same value in normal distribution O c. The distribution is symmetrical such that the left and right half each represents 50% of the data points Od. The proportion between 0 and +1 will be the same as as the proportion between +1 and +2

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