High blood-lead levels are associated with a number of different health problems. The article A Study of
Question:
High blood-lead levels are associated with a number of different health problems. The article “A Study of the Relationship between Blood Lead Levels and Occupational Lead Levels” (American Statistician [1983]: 471) gave data on x = air-lead level (mg/m3) and y = bloodlead level (mg/dL). Summary quantities (based on a subset of the data given in a plot in the article) are
a. Find the equation of the estimated regression line.
b. Estimate the mean blood-lead level for people who work where the air-lead level is 100 mg/m3 using a 90% interval.
c. Construct a 90% prediction interval for the blood-lead level of a particular person who works where the air-lead level is 100 mg/m3.
d. Explain the difference in interpretation of the intervals computed in Parts (b) and (c).
Step by Step Answer:
Introduction To Statistics And Data Analysis
ISBN: 9780495118732
3rd Edition
Authors: Roxy Peck, Chris Olsen, Jay L. Devore