Consider a value to be significantly low if its z score less than or equal tominus−2 or consider a value to be significantly high if its z score is greater than or equal to 2.
A test is used to assess readiness for college. In a recent year, the mean test score was 21.5 and the standard deviation was 5.1. Identify the test scores that are significantly low or significantly high.
What test scores are significantly low?
What test scores are significantly high?
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