Question
Do students participating in extracurricular activities have higher grade point averages? In a large national study, a random sample of 455 students who participated in
Do students participating in extracurricular activities have higher grade point averages? In a large
national study, a random sample of 455 students who participated in extracurricular activities had a
mean GPA of 2.76 with a standard deviation of 0.68. A random sample of 569 students who did not
participate in extracurricular activities had a mean GPA of 2.58 with a standard deviation of 0.84.
Construct and interpret a 90% confidence interval for the difference in mean grade point averages for
students who participate in extracurricular activities and those who do not.
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