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The mean score of high school graduates completing the SAT in 2019 was 1059 (N = 2,220,087, SD = 210). Marketing materials from an SAT
The mean score of high school graduates completing the SAT in 2019 was 1059 (N = 2,220,087, SD = 210). Marketing materials from an SAT preparation company assert that, on average, those completing their program score significantly higher than the published mean score. The mean SAT score for a random sample of 120 of the program's students was 1090. Use an alpha level of .05one-tail and determine whether there is evidence that those completing the preparation course score significantly higher on the SAT. What is the value of zobt
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