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In this video, we will learn about z-scores and standardization. By understanding these concepts, we can calculate exact proportions using the standard normal distribution. The standard normal distribution has a mean of 0 and a standard deviation of 1, always centered at 0. Each number on the horizontal axis corresponds to a z-score, indicating the number of standard deviations an observation is from the mean. Z-scores help us calculate the area associated with a specific z-score, allowing us to find the exact area using a z-score.