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2. Case Study: A researcher studies the lived experiences of women who have survived breast cancer through in-depth interviews, focusing on how the diagnosis and treatment affected their personal identities.

Research Question: What are the lived experiences of women who have survived breast cancer, and how do these experiences shape their sense of identity?

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3. Case Study: A marketing company surveys people of different ages, incomes, and geographic locations in a single point in time to determine preferences for a new product.

Research Question: What are the demographic factors that influence consumer preference for the new product?

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4. Case Study: A researcher examines a single school's implementation of a new technology-based learning program over a year to understand its impact on student engagement and learning outcomes.

Research Question: How did the implementation of the new technology-based learning program affect student engagement and academic performance at this school?

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5. Case Study: A health researcher follows a group of smokers and non-smokers over a 20-year period to study the long-term effects of smoking on lung health.

Research Question: How does smoking affect lung health over a 20-year period compared to non-smokers?

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1. Case Study: A researcher randomly assigns participants to either a group that exercises regularly or one that does not, to see whether regular physical activity leads to reduced symptoms of depression.

Research Question: Does regular physical activity cause a reduction in symptoms of depression in adults?

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8. Case Study: A psychologist studies the relationship between social media use and levels of anxiety among teenagers by administering surveys.

Research Question: Is there a correlation between the number of hours teenagers spend on social media and their reported anxiety levels?

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10. Case Study: An environmental researcher records the biodiversity of plant species in different regions of a national park to create a catalog of species that inhabit each region.

Research Question: What is the diversity of plant species in different regions of the national park?

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7. Case Study: A scientist conducts an experiment to test the effect of different levels of fertilizer on the growth rate of tomato plants in a controlled environment.

Research Question: How does the amount of fertilizer affect the growth rate of tomato plants in a controlled greenhouse setting?

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9. Case Study: A pharmaceutical company examines whether a new medication lowers cholesterol levels more effectively than the current standard treatment in a controlled clinical trial.

Research Question: Does the new cholesterol-lowering medication reduce cholesterol levels more effectively than the current treatment in patients with high cholesterol?

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6. Case Study: A sociologist interviews members of an indigenous community to understand their perspectives on the impact of modernization on their cultural practices.

Research Question: How do members of this indigenous community perceive the effects of modernization on their traditional way of life?

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12. Case Study: A tech company wants to understand the behaviors and motivations of users who abandon their online shopping carts before completing purchases. They conduct interviews and focus groups with a small sample of users.

Research Question: What factors contribute to users abandoning online shopping carts?

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14. Case Study: An automotive company investigates new battery technologies to improve the range of electric vehicles. Their goal is to develop a product with a more efficient and affordable power source for consumers.

Research Question: How can the performance of electric vehicle batteries be improved to increase driving range?

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11. Case Study: A researcher surveys 1,000 university students to determine the correlation between hours of sleep and academic performance.

Research Question: What is the relationship between the number of hours university students sleep and their academic performance as measured by GPA?

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13. Case Study: A group of scientists studies the properties of graphene, a single layer of carbon atoms arranged in a hexagonal lattice, to understand its potential as a superconductor. The goal is to contribute to theoretical knowledge of materials science.

Research Question: What are the electrical properties of graphene under extreme temperature conditions?