Mathematics, 09.04.2020 00:26, HistoryNerd7225

A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1473 and the standard deviation was 318 . The test scores of four students selected at random are 1890 , 1230 , 2220 , and 1360 . Find the z-scores that correspond to each value and determine whether any of the values are unusual.

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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 147...