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In a survey, 200 people were asked to identify their major source of news information; 110 stated that their major source was television news.
a. Construct a 95% confidence interval for the proportion of people in the population who consider television their major source of news information.
b. Determine how large a sample would be necessary to estimate the population proportion with a margin of error of .05 at 95% confidence
What are the key conceptual differences between these 3 methods? In other words, under what conditions do we choose each method for our analysis, and why?
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We suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in years), so we choose a random sample of drivers who have similar automobile insurance coverage and collect data about th..
Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300.00?
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