Mathematics
24.07.2022 11:52
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1.A nutritionist wants to collect data on how much caffeine the average American
1.A nutritionist wants to collect data on how much caffeine the average American drinks per day. She has the following ideas for how she could obtain a sample:
1.Ask the first 20 adults who arrive at a grocery store after 10:00 a.m. about the average amount of caffeine they consume each day.
2.Every 30 minutes, ask the first adult who comes into a coffee shop about the average amount of caffeine they consume each day.
•Would the different methods for selecting a sample lead to different conclusions about the population?
•What are the benefits of each method?
•What might each method overlook?
•Which of the methods listed would be the most likely to produce samples that are representative of the population being studied?
•Can you think of a better way to select a sample for this situation?
Ready? Enter your answer here.
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2.Every 30 minutes, ask the first adult who comes into a coffee shop about the average amount of caffeine they consume each day.
•Would the different methods for selecting a sample lead to different conclusions about the population?
•What are the benefits of each method?
•What might each method overlook?
•Which of the methods listed would be the most likely to produce samples that are representative of the population being studied?
•Can you think of a better way to select a sample for this situation?
Ready? Enter your answer here.
ghwolf4p0m7x0
4,8(15 marks)
Water is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. Describe what happens on the molecular level as the water dissolves in the isopropanol.
Step-by-step explanation:
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