**Please answer the following questions: (the number of sentences for each question is included) You can answer in question form instead of essay. 1.Discuss four uses of epidemiology. For each use, give examples. (8sentences)2.Describe John Snow’s natural experiment. 3.Identify the differences between population and sample. What are the commonly used sampling methods? (3 sentences)4.What are the Steven’s measurement scales? Give an example of each. (14 sentences)5.Define measures of central tendency. What are the measures? For which type of data (measurement scales) can you measure the central tendency? (3 sentences)6.Define frequencies, proportions/percentages. For which type of data (measurement scales) can you measure the frequencies and proportions/percentages? (4 sentences)7.What are the statistical measures that we can use to analyze bivariate association? (2 sentences)8.Explain the role of population health leaders in creating and implementing a workforce development strategy. (5 sentences)9. How is a workforce development plan different from a training plan?(3 sentences)10. How do issues of privacy and personal autonomy relate to the use of personal technology and behavioral science as tools for health management?11. What are the three main purposes of population health measurement? What are the three basic questions in the Model for Improvement? 12. Hand Washing and COVID-19: Before and After: Apply one Health Behavior Theory in the case of hand washing as a number one preventative measure for infection control. Justify your choice. Provide examples of success with reference where applicable.