Advanced Placement (AP), 10.02.2021 16:00 mistymjoy
Suppose that between their first and second years in college, 400 students are randomly selected and given a university grant to purchase a new computer. For student 'i,' y 1 denotes the change in GPA from the first year to the second year. If the average change is ¯ y = .132 with a standard deviation of s = 1.27, is the average change in GPAs statistically greater than zero?
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Suppose that between their first and second years in college, 400 students are randomly selected and...
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