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Mathematics, 28.10.2019 05:31 itislyz

Astandardized exam's scores are normally distributed. in a recent year, the mean test score was 1548 and the standard deviation was 319. the test scores of four students selected at random are 1990, 1280, 2240, and 1450. find the z-scores that correspond to each value and determine whether any of the values are unusual.

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Astandardized exam's scores are normally distributed. in a recent year, the mean test score was 1548...
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