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T-test for SAT Preparatory Program

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A random sample of 36 seniors in high school shows that the difference in aptitude scores after taking an SAT-preparatory program is 700 points. Also, the sum of the squared differences is known to be 66,800. Determine whether this difference is significant at the 1% level of risk. Use the t test to decide whether the program seems to be successful. Show your procedure and explain.

Test Statistic t =

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The expert uses a t-test for SAT preparatory program to examine test scores.

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