Question: 1990 the average math sat score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to

1990 the average math sat score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the averae math SAT score at the school has changed. He picks a random sample of 49 students and obtains their mean mathc SAT score, which is 490 and standard deviation is 25. Test whether the claim that the average math SAT score has increased from 475 is supported or not supported

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