) Here the highest 10% is the same as the 90 Superscript th percentile. The normal percentile corresponding to a z-score gives the percentage of values in a standard normal distribution found at that z-score or below. Part 2 The corresponding z-score for the 90 Superscript th percentile can be found using either technology or a normal distribution table. Here, use technology to determine the z-score, rounding to two decimal places