A standardized exam's scores are normally distributed. In a recent year, the mean test score...
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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1463 and the standard deviation was 311. The test scores of fourstudents selected at random are 1890, 1230, 2170, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual.The Z-score for 1890 is
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