A 6th grade math teacher wants to demonstrate her students performed well on the state STAAR test.  She knows the average score for 6th graders in her district on the math STAAR is 1673.  She has access to all scores from her students and is able to calculate their mean and standard deviation. Which statistical test would be best to determine if her students are significantly different from the district average?     z-test     one-sample t-test     dependent samples t-test     independent samples t-test

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