The marketing department of a firm in New York City is curious to see which group of U. S. high school students, from the 9th, 10th, 11th, or 12th grades, spends the most time watching television each day. After selecting 25 students randomly, they find that 9th graders watch the most television per day
Part A: What is the population?
Part B: What is the sample of the population?
Part C: Discuss collaboratively: Explain the difference between population and sample
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