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Dr. Moneypenny is interested in examining differences in spending habits across the life span. Her hypothesis is that people become more conservative in their spending habits as they age. To test this hypothesis, she randomly selects individuals born in 1940, 1960, 1980, and 2000 and then has them complete a questionnaire about their spending habits. Dr. Moneypenny finds significant differences in spending habits across the various age groups. She notes that those born earlier tend to be more conservative in their spending habits than those born later. She concludes that as one ages, one becomes more conservative in his/her spending habits.

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Based on the above, answer the following questions in the space below. They are repeated below for your convenience.

1. What is the correct name for this design?

2. Do you agree with her conclusion? Explain why or why not.

3. Propose an alternate design for examining this question. Name it, explain how you would address the above question.

4. What are the potential pitfalls of this alternate design?

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