Statistics Solutions

(Solved) The mean SAT score in mathematics is 483 with a standard deviation of 100. A costly SAT preparation course promoter claims his course increases math

Question: The mean SAT score in mathematics is 483 with a standard deviation of 100. A costly SAT preparation course promoter claims his course increases math SAT scores. A sample of 32 course attendees yielded a mean math SAT score of 494. At alpha = .05, do these 32 scores back up the promoters claim?

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