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A study of 392 healthy children living in the area of Tours, France, was designed to measure the serum levels of certain fat-soluble vitaminsnamely, vitamin A, vitamin E, beta-carotene, and cholesterol. Knowledge of the reference levels for children living in an industrial country, with normal food availability and feeding habits, would be important in establishing borderline levels for children living in other, less favorable conditions. Results are shown below Mean 1 SD (n=392) Boys (in: 207) Girls (n=185) Retmml (pgidl) 42.51123 43.01133 413110.? Cholesterol (8-H) 13410.42 13410.47 13310.33 Vitamin EfCholgstefol (mgfg) 5.261134 52611.11 52610.25 1. Describe the sampled population. 2. Find a 99% CI for the mean cholesterol level for the population of boys and interpret the results. 3. Find a 99% CI for the mean beta-carotene level for the population of girls and interpret the results. 4. Can the data collected by the researchers be used to estimate serum levels for all boys and girls in this age category? Explain why or why not