38.) Given Phoebe doesn't trust her combination of data and regression model, which approach would give her the best chance of overcoming her concerns? Assume she can implement whatever plan she comes up with. a.) Increase her sample size b.) Use weighted least squares instead of ordinary least squares c.) Use a 99.9% confidence level d.) Randomly send some kids home from school with books, and randomly assgning others to get no extra books. Check back in 5 years and observe the average number of cavities for these two groups.
38.) Given Phoebe doesn't trust her combination of data and regression model, which approach would give her the best chance of overcoming her concerns? Assume she can implement whatever plan she comes up with. a.) Increase her sample size b.) Use weighted least squares instead of ordinary least squares c.) Use a 99.9% confidence level d.) Randomly send some kids home from school with books, and randomly assgning others to get no extra books. Check back in 5 years and observe the average number of cavities for these two groups.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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