A random sampleof 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 =
The expert uses a t-test for SAT preparatory program to examine test scores.