Use the normal distribution to the right to answer the questions. Standardized Test Composite Scores (a) What percent of the scores are less than 19? (b) Out of 1500 randomly selected scores, about how many would be expected to be greater than 21? H= 19.8 6 = 5.6 19 21 Score -------

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A: a) Given that μ=19.5σ=5.4 The percent of the scores are less than​ 19 is, PX<19=PX-μσ<19-μσ…

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