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In an early study, researchers at Ivy University found that 33 percent of the freshmen had...

In an early study, researchers at Ivy University found that 33 percent of the freshmen had received at least one A in their first semester. Administrators are concerned that grade inflation has caused this percentage to increase. In a more recent study, of a random sample of 500 freshmen, 185 had at least one A in their first semester. Test the claim at α = .05.

What it the hypothesis in this question? why is it right tailed?

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