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Question: A report in the Davis (CA) Enterprise (6 April 1994, p. A-11) was headlined, "Highly educated people are less likely to develop Alzheimer's disease, a new study suggests."

a. State the null and alternative hypotheses the researchers would have used in this study.

b. What do you think the headline is implying about statistical significance? Restate the headline in terms of statistical significance.

c. Was this a one-sided test or a two-sided test? Explain.

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