A subset of data read from a graph that appeared in the paper Decreased Brain Volume in
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a. What is the equation of the estimated regression line?
b. For this dataset, n 5 100, x 5 11.5, se 5 0.032, and Sxx 5 1764. Estimate the mean brain volume change for people with a childhood blood lead level of 20 mg/dL, using a 90% confidence interval.
c. Construct a 90% prediction interval for brain volume change for a person with a childhood blood lead level of 20 mg/dL.
d. Explain the difference in interpretation of the intervals computed in Parts (b) and (c).
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a The equation of the estimated regression line is y 0001790 00021007 x where x mean childhood blood ...View the full answer
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Related Book For 
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore
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