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Suppose the mean GPA of all students graduating from the

Suppose the mean GPA of all students graduating from the University of Alabama in 1985 was

3.05. The registrar plans to look at records of students graduating in 2011 to see if mean GPA has changed. Define notation and state the null and alternative hypotheses for this investigation.

3.05. The registrar plans to look at records of students graduating in 2011 to see if mean GPA has changed. Define notation and state the null and alternative hypotheses for this investigation.

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