Do Students Tend to Improve Their SAT Mathematics (SAT-M)scores the Second

question 63

Multiple Choice

Do students tend to improve their SAT Mathematics (SAT-M) scores the second time they take the test? A random sample of four students who took the test twice received the following scores. Assume that the change in SAT-M score (second score - first score) for the population of all students taking the test twice is Normally distributed.What is a 90% confidence interval for ,the mean change in SAT-M score?

• A)(-8.24,58.24)
• B)(-18.08,68.08)
• C)(-22.56,72.56)
• D)(-39.31,89.31)

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